164547874564 has 6 divisors (see below), whose sum is σ = 287958780494. Its totient is φ = 82273937280.

The previous prime is 164547874541. The next prime is 164547874567. The reversal of 164547874564 is 465478745461.

It can be written as a sum of positive squares in only one way, i.e., 152849721600 + 11698152964 = 390960^2 + 108158^2 .

It is not an unprimeable number, because it can be changed into a prime (164547874567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20568484317 + ... + 20568484324.

Almost surely, 2^164547874564 is an apocalyptic number.

It is an amenable number.

164547874564 is a deficient number, since it is larger than the sum of its proper divisors (123410905930).

164547874564 is a wasteful number, since it uses less digits than its factorization.

164547874564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41136968645 (or 41136968643 counting only the distinct ones).

The product of its digits is 90316800, while the sum is 61.

The spelling of 164547874564 in words is "one hundred sixty-four billion, five hundred forty-seven million, eight hundred seventy-four thousand, five hundred sixty-four".