163664433064674 has 40 divisors (see below), whose sum is σ = 376641172802268. Its totient is φ = 53080356667680.

The previous prime is 163664433064667. The next prime is 163664433064679. The reversal of 163664433064674 is 476460334466361.

163664433064674 is a `hidden beast` number, since 1 + 6 + 3 + 66 + 443 + 3 + 0 + 64 + 6 + 74 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 132062777308449 + 31601655756225 = 11491857^2 + 5621535^2 .

It is not an unprimeable number, because it can be changed into a prime (163664433064679) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13652349117 + ... + 13652361104.

Almost surely, 2^{163664433064674} is an apocalyptic number.

163664433064674 is an abundant number, since it is smaller than the sum of its proper divisors (212976739737594).

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

163664433064674 is a wasteful number, since it uses less digits than its factorization.

163664433064674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27304710272 (or 27304710263 counting only the distinct ones).

The product of its (nonzero) digits is 376233984, while the sum is 63.

The spelling of 163664433064674 in words is "one hundred sixty-three trillion, six hundred sixty-four billion, four hundred thirty-three million, sixty-four thousand, six hundred seventy-four".