28453358664 has 24 divisors (see below), whose sum is σ = 77061179910. Its totient is φ = 9484452864.

The previous prime is 28453358657. The next prime is 28453358693. The reversal of 28453358664 is 46685335482.

28453358664 is a `hidden beast` number, since 2 + 8 + 4 + 53 + 3 + 586 + 6 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 25363110564 + 3090248100 = 159258^2 + 55590^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 28453358664.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 197592697 + ... + 197592840.

Almost surely, 2^28453358664 is an apocalyptic number.

28453358664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28453358664 is an abundant number, since it is smaller than the sum of its proper divisors (48607821246).

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

28453358664 is a wasteful number, since it uses less digits than its factorization.

28453358664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395185549 (or 395185542 counting only the distinct ones).

The product of its digits is 16588800, while the sum is 54.

The spelling of 28453358664 in words is "twenty-eight billion, four hundred fifty-three million, three hundred fifty-eight thousand, six hundred sixty-four".