28655644655682 has 96 divisors (see below), whose sum is σ = 70177701335040. Its totient is φ = 8374069992960.

The previous prime is 28655644655657. The next prime is 28655644655699.

28655644655682 is a `hidden beast` number, since 2 + 8 + 6 + 5 + 5 + 64 + 4 + 6 + 556 + 8 + 2 = 666.

28655644655682 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×28655644655682² (a number of 28 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 28655644655682.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16479682 + ... + 18135357.

It is an arithmetic number, because the mean of its divisors is an integer number (731017722240).

Almost surely, 2^{28655644655682} is an apocalyptic number.

28655644655682 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28655644655682 is an abundant number, since it is smaller than the sum of its proper divisors (41522056679358).

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

28655644655682 is a wasteful number, since it uses less digits than its factorization.

28655644655682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34615208 (or 34615205 counting only the distinct ones).

The product of its digits is 3317760000, while the sum is 72.

The spelling of 28655644655682 in words is "twenty-eight trillion, six hundred fifty-five billion, six hundred forty-four million, six hundred fifty-five thousand, six hundred eighty-two".