86564891432 has 8 divisors (see below), whose sum is σ = 162309171450. Its totient is φ = 43282445712.

The previous prime is 86564891407. The next prime is 86564891449. The reversal of 86564891432 is 23419846568.

It can be written as a sum of positive squares in only one way, i.e., 86056569316 + 508322116 = 293354^2 + 22546^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5410305707 + ... + 5410305722.

Almost surely, 2^86564891432 is an apocalyptic number.

It is an amenable number.

86564891432 is a deficient number, since it is larger than the sum of its proper divisors (75744280018).

86564891432 is a wasteful number, since it uses less digits than its factorization.

86564891432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10820611435 (or 10820611431 counting only the distinct ones).

The product of its digits is 9953280, while the sum is 56.

The spelling of 86564891432 in words is "eighty-six billion, five hundred sixty-four million, eight hundred ninety-one thousand, four hundred thirty-two".