| Base | Representation |
|---|---|
| bin | 10010000111000101000… |
| … | …001110110000000010000 |
| 3 | 11101222101220112200121002 |
| 4 | 102013011001312000100 |
| 5 | 130342320043042230 |
| 6 | 2351423334121132 |
| 7 | 155626065113423 |
| oct | 22070501660020 |
| 9 | 4358356480532 |
| 10 | 1244551143440 |
| 11 | 43a8a1747600 |
| 12 | 1812517b01a8 |
| 13 | 9048c50c747 |
| 14 | 443453159ba |
| 15 | 22591014545 |
| hex | 121c5076010 |
1244551143440 has 480 divisors, whose sum is σ = 3510975283200. Its totient is φ = 408056140800.
The previous prime is 1244551143439. The next prime is 1244551143487. The reversal of 1244551143440 is 443411554421.
It is a super-2 number, since 2×12445511434402 (a number of 25 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (38).
It is a junction number, because it is equal to n+sod(n) for n = 1244551143394 and 1244551143403.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1011007625 + ... + 1011008855.
It is an arithmetic number, because the mean of its divisors is an integer number (7314531840).
Almost surely, 21244551143440 is an apocalyptic number.
1244551143440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 1244551143440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1755487641600).
1244551143440 is an abundant number, since it is smaller than the sum of its proper divisors (2266424139760).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1244551143440 is a wasteful number, since it uses less digits than its factorization.
1244551143440 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1547 (or 1530 counting only the distinct ones).
The product of its (nonzero) digits is 153600, while the sum is 38.
Adding to 1244551143440 its reverse (443411554421), we get a palindrome (1687962697861).
The spelling of 1244551143440 in words is "one trillion, two hundred forty-four billion, five hundred fifty-one million, one hundred forty-three thousand, four hundred forty".
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