65117156699970 has 48 divisors (see below), whose sum is σ = 169929347732352. Its totient is φ = 17300499190560.

The previous prime is 65117156699911. The next prime is 65117156699981. The reversal of 65117156699970 is 7999665171156.

65117156699970 is a `hidden beast` number, since 6 + 51 + 1 + 7 + 1 + 566 + 9 + 9 + 9 + 7 + 0 = 666.

It is a Curzon number.

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, 1334890672 + ... + 1334939451.

It is an arithmetic number, because the mean of its divisors is an integer number (3540194744424).

Almost surely, 2^{65117156699970} is an apocalyptic number.

65117156699970 is an abundant number, since it is smaller than the sum of its proper divisors (104812191032382).

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

65117156699970 is a wasteful number, since it uses less digits than its factorization.

65117156699970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2669830407 (or 2669830404 counting only the distinct ones).

The product of its (nonzero) digits is 192893400, while the sum is 72.

The spelling of 65117156699970 in words is "sixty-five trillion, one hundred seventeen billion, one hundred fifty-six million, six hundred ninety-nine thousand, nine hundred seventy".