64187338763466 has 48 divisors (see below), whose sum is σ = 139201963135560. Its totient is φ = 21375875857920.

The previous prime is 64187338763411. The next prime is 64187338763477. The reversal of 64187338763466 is 66436783378146.

64187338763466 is a `hidden beast` number, since 6 + 4 + 1 + 8 + 73 + 38 + 7 + 63 + 466 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 22901766365241 + 41285572398225 = 4785579^2 + 6425385^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 64187338763394 and 64187338763403.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 242975140 + ... + 243239168.

Almost surely, 2^{64187338763466} is an apocalyptic number.

64187338763466 is an abundant number, since it is smaller than the sum of its proper divisors (75014624372094).

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

64187338763466 is a wasteful number, since it uses less digits than its factorization.

64187338763466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276551 (or 276548 counting only the distinct ones).

The product of its digits is 1755758592, while the sum is 72.

The spelling of 64187338763466 in words is "sixty-four trillion, one hundred eighty-seven billion, three hundred thirty-eight million, seven hundred sixty-three thousand, four hundred sixty-six".