15655355828 has 24 divisors (see below), whose sum is σ = 33152519232. Its totient is φ = 6314765184.

The previous prime is 15655355813. The next prime is 15655355851. The reversal of 15655355828 is 82855355651.

It is a super-2 number, since 2×15655355828² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 15655355828.

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, 16444226 + ... + 16445177.

It is an arithmetic number, because the mean of its divisors is an integer number (1381354968).

Almost surely, 2^15655355828 is an apocalyptic number.

It is an amenable number.

15655355828 is an abundant number, since it is smaller than the sum of its proper divisors (17497163404).

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

15655355828 is a wasteful number, since it uses less digits than its factorization.

15655355828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32889431 (or 32889429 counting only the distinct ones).

The product of its digits is 7200000, while the sum is 53.

The spelling of 15655355828 in words is "fifteen billion, six hundred fifty-five million, three hundred fifty-five thousand, eight hundred twenty-eight".