402165530664 has 32 divisors (see below), whose sum is σ = 1006907795520. Its totient is φ = 133855981056.

The previous prime is 402165530647. The next prime is 402165530687. The reversal of 402165530664 is 466035561204.

It is a super-2 number, since 2×402165530664² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12433252 + ... + 12465555.

It is an arithmetic number, because the mean of its divisors is an integer number (31465868610).

Almost surely, 2^402165530664 is an apocalyptic number.

It is an amenable number.

402165530664 is an abundant number, since it is smaller than the sum of its proper divisors (604742264856).

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

402165530664 is a wasteful number, since it uses less digits than its factorization.

402165530664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24899489 (or 24899485 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 402165530664 in words is "four hundred two billion, one hundred sixty-five million, five hundred thirty thousand, six hundred sixty-four".