28663171464 has 32 divisors (see below), whose sum is σ = 73182568320. Its totient is φ = 9351105216.

The previous prime is 28663171457. The next prime is 28663171501. The reversal of 28663171464 is 46417136682.

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, 12704179 + ... + 12706434.

It is an arithmetic number, because the mean of its divisors is an integer number (2286955260).

Almost surely, 2^28663171464 is an apocalyptic number.

28663171464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28663171464 is an abundant number, since it is smaller than the sum of its proper divisors (44519396856).

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

28663171464 is a wasteful number, since it uses less digits than its factorization.

28663171464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25410669 (or 25410665 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 48.

The spelling of 28663171464 in words is "twenty-eight billion, six hundred sixty-three million, one hundred seventy-one thousand, four hundred sixty-four".