28610765664 has 96 divisors (see below), whose sum is σ = 80914821120. Its totient is φ = 8799570432.

The previous prime is 28610765633. The next prime is 28610765719. The reversal of 28610765664 is 46656701682.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4947927 + ... + 4953705.

It is an arithmetic number, because the mean of its divisors is an integer number (842862720).

Almost surely, 2^28610765664 is an apocalyptic number.

28610765664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28610765664 is an abundant number, since it is smaller than the sum of its proper divisors (52304055456).

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

28610765664 is a wasteful number, since it uses less digits than its factorization.

28610765664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9772 (or 9764 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 51.

The spelling of 28610765664 in words is "twenty-eight billion, six hundred ten million, seven hundred sixty-five thousand, six hundred sixty-four".