18244340904552 has 256 divisors, whose sum is σ = 53633395200000. Its totient is φ = 5169437957376.

The previous prime is 18244340904551. The next prime is 18244340904553. The reversal of 18244340904552 is 25540904344281.

It is an interprime number because it is at equal distance from previous prime (18244340904551) and next prime (18244340904553).

It is a super-3 number, since 3×18244340904552³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18244340904495 and 18244340904504.

It is not an unprimeable number, because it can be changed into a prime (18244340904551) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 502899438 + ... + 502935714.

It is an arithmetic number, because the mean of its divisors is an integer number (209505450000).

Almost surely, 2^{18244340904552} is an apocalyptic number.

18244340904552 is a gapful number since it is divisible by the number (12) 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 18244340904552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26816697600000).

18244340904552 is an abundant number, since it is smaller than the sum of its proper divisors (35389054295448).

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

18244340904552 is a wasteful number, since it uses less digits than its factorization.

18244340904552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36813 (or 36795 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 51.

The spelling of 18244340904552 in words is "eighteen trillion, two hundred forty-four billion, three hundred forty million, nine hundred four thousand, five hundred fifty-two".