28461311464 has 16 divisors (see below), whose sum is σ = 56504074500. Its totient is φ = 13393558272.

The previous prime is 28461311453. The next prime is 28461311479. The reversal of 28461311464 is 46411316482.

It can be written as a sum of positive squares in 2 ways, for example, as 27652364100 + 808947364 = 166290^2 + 28442^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104637039 + ... + 104637310.

Almost surely, 2^28461311464 is an apocalyptic number.

It is an amenable number.

28461311464 is a deficient number, since it is larger than the sum of its proper divisors (28042763036).

28461311464 is a wasteful number, since it uses less digits than its factorization.

28461311464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209274372 (or 209274368 counting only the distinct ones).

The product of its digits is 110592, while the sum is 40.

The spelling of 28461311464 in words is "twenty-eight billion, four hundred sixty-one million, three hundred eleven thousand, four hundred sixty-four".