117716656578 has 16 divisors (see below), whose sum is σ = 235506445056. Its totient is φ = 39226696880.

The previous prime is 117716656507. The next prime is 117716656591. The reversal of 117716656578 is 875656617711.

It is a super-2 number, since 2×117716656578² (a number of 23 digits) contains 22 as substring.

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, 3026226 + ... + 3064877.

It is an arithmetic number, because the mean of its divisors is an integer number (14719152816).

Almost surely, 2^117716656578 is an apocalyptic number.

117716656578 is an abundant number, since it is smaller than the sum of its proper divisors (117789788478).

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

117716656578 is a wasteful number, since it uses less digits than its factorization.

117716656578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6094329.

The product of its digits is 14817600, while the sum is 60.

The spelling of 117716656578 in words is "one hundred seventeen billion, seven hundred sixteen million, six hundred fifty-six thousand, five hundred seventy-eight".