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12401345450 = 2521353359981
BaseRepresentation
bin10111000110010110…
…11000001110101010
31012000021022121210202
423203023120032222
5200344221023300
65410323512202
7616213461044
oct134313301652
935007277722
1012401345450
11529426642a
1224a1228662
131228357640
14859052a94
154c8aecad5
hex2e32d83aa

12401345450 has 48 divisors (see below), whose sum is σ = 25309614456. Its totient is φ = 4492550400.

The previous prime is 12401345447. The next prime is 12401345461. The reversal of 12401345450 is 5454310421.

12401345450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 12 ways, for example, as 1705442209 + 10695903241 = 41297^2 + 103421^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 145541 + ... + 214440.

Almost surely, 212401345450 is an apocalyptic number.

12401345450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12401345450 is an abundant number, since it is smaller than the sum of its proper divisors (12908269006).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12401345450 is a wasteful number, since it uses less digits than its factorization.

12401345450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360059 (or 360054 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 12401345450 its reverse (5454310421), we get a palindrome (17855655871).

The spelling of 12401345450 in words is "twelve billion, four hundred one million, three hundred forty-five thousand, four hundred fifty".

Divisors: 1 2 5 10 13 25 26 50 53 65 106 130 265 325 530 650 689 1325 1378 2650 3445 6890 17225 34450 359981 719962 1799905 3599810 4679753 8999525 9359506 17999050 19078993 23398765 38157986 46797530 95394965 116993825 190789930 233987650 248026909 476974825 496053818 953949650 1240134545 2480269090 6200672725 12401345450