28566466464 has 48 divisors (see below), whose sum is σ = 75021297120. Its totient is φ = 9517797120.

The previous prime is 28566466451. The next prime is 28566466493. The reversal of 28566466464 is 46466466582.

It is a tau number, because it is divible by the number of its divisors (48).

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, 146227 + ... + 280205.

It is an arithmetic number, because the mean of its divisors is an integer number (1562943690).

Almost surely, 2^28566466464 is an apocalyptic number.

28566466464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28566466464 is an abundant number, since it is smaller than the sum of its proper divisors (46454830656).

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

28566466464 is a wasteful number, since it uses less digits than its factorization.

28566466464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136213 (or 136205 counting only the distinct ones).

The product of its digits is 39813120, while the sum is 57.

The spelling of 28566466464 in words is "twenty-eight billion, five hundred sixty-six million, four hundred sixty-six thousand, four hundred sixty-four".