15597012840 has 64 divisors (see below), whose sum is σ = 46804728960. Its totient is φ = 4157986560.

The previous prime is 15597012803. The next prime is 15597012881. The reversal of 15597012840 is 4821079551.

15597012840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×15597012840² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15597012792 and 15597012801.

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 15 ways as a sum of consecutive naturals, for example, 438525 + ... + 472755.

It is an arithmetic number, because the mean of its divisors is an integer number (731323890).

Almost surely, 2^15597012840 is an apocalyptic number.

15597012840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15597012840 is an abundant number, since it is smaller than the sum of its proper divisors (31207716120).

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

15597012840 is a wasteful number, since it uses less digits than its factorization.

15597012840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38042 (or 38038 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 42.

The spelling of 15597012840 in words is "fifteen billion, five hundred ninety-seven million, twelve thousand, eight hundred forty".