64185562808056 has 32 divisors (see below), whose sum is σ = 122064422109840. Its totient is φ = 31636742416128.

The previous prime is 64185562808041. The next prime is 64185562808207. The reversal of 64185562808056 is 65080826558146.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105456951 + ... + 106063846.

Almost surely, 2^{64185562808056} is an apocalyptic number.

It is an amenable number.

64185562808056 is a deficient number, since it is larger than the sum of its proper divisors (57878859301784).

64185562808056 is a wasteful number, since it uses less digits than its factorization.

64185562808056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211521343 (or 211521339 counting only the distinct ones).

The product of its (nonzero) digits is 110592000, while the sum is 64.

The spelling of 64185562808056 in words is "sixty-four trillion, one hundred eighty-five billion, five hundred sixty-two million, eight hundred eight thousand, fifty-six".