15105797556 has 24 divisors (see below), whose sum is σ = 35996795520. Its totient is φ = 4928132352.

The previous prime is 15105797549. The next prime is 15105797569. The reversal of 15105797556 is 65579750151.

It is a junction number, because it is equal to n+sod(n) for n = 15105797499 and 15105797508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13391101 + ... + 13392228.

It is an arithmetic number, because the mean of its divisors is an integer number (1499866480).

Almost surely, 2^15105797556 is an apocalyptic number.

It is an amenable number.

15105797556 is an abundant number, since it is smaller than the sum of its proper divisors (20890997964).

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

15105797556 is a wasteful number, since it uses less digits than its factorization.

15105797556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26783383 (or 26783381 counting only the distinct ones).

The product of its (nonzero) digits is 1653750, while the sum is 51.

The spelling of 15105797556 in words is "fifteen billion, one hundred five million, seven hundred ninety-seven thousand, five hundred fifty-six".