99569427564 has 12 divisors (see below), whose sum is σ = 232328664344. Its totient is φ = 33189809184.

The previous prime is 99569427547. The next prime is 99569427571. The reversal of 99569427564 is 46572496599.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 99569427495 and 99569427504.

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, 4148726137 + ... + 4148726160.

Almost surely, 2^99569427564 is an apocalyptic number.

It is an amenable number.

99569427564 is an abundant number, since it is smaller than the sum of its proper divisors (132759236780).

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

99569427564 is a wasteful number, since it uses less digits than its factorization.

99569427564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8297452304 (or 8297452302 counting only the distinct ones).

The product of its digits is 146966400, while the sum is 66.

The spelling of 99569427564 in words is "ninety-nine billion, five hundred sixty-nine million, four hundred twenty-seven thousand, five hundred sixty-four".