64857678610995 has 48 divisors (see below), whose sum is σ = 112629517416000. Its totient is φ = 34526310174720.

The previous prime is 64857678610961. The next prime is 64857678611027. The reversal of 64857678610995 is 59901687675846.

It is a happy number.

64857678610995 is a `hidden beast` number, since 6 + 485 + 7 + 6 + 78 + 61 + 0 + 9 + 9 + 5 = 666.

It is not a de Polignac number, because 64857678610995 - 2⁷ = 64857678610867 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 140177635 + ... + 140639555.

It is an arithmetic number, because the mean of its divisors is an integer number (2346448279500).

Almost surely, 2^{64857678610995} is an apocalyptic number.

64857678610995 is a deficient number, since it is larger than the sum of its proper divisors (47771838805005).

64857678610995 is a wasteful number, since it uses less digits than its factorization.

64857678610995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467740 (or 467737 counting only the distinct ones).

The product of its (nonzero) digits is 5486745600, while the sum is 81.

The spelling of 64857678610995 in words is "sixty-four trillion, eight hundred fifty-seven billion, six hundred seventy-eight million, six hundred ten thousand, nine hundred ninety-five".