117578117886 has 64 divisors (see below), whose sum is σ = 259607462400. Its totient is φ = 35335149696.

The previous prime is 117578117851. The next prime is 117578117887. The reversal of 117578117886 is 688711875711.

It is a happy number.

It is a super-2 number, since 2×117578117886² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117578117887) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 402720 + ... + 630348.

It is an arithmetic number, because the mean of its divisors is an integer number (4056366600).

Almost surely, 2^117578117886 is an apocalyptic number.

117578117886 is an abundant number, since it is smaller than the sum of its proper divisors (142029344514).

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

117578117886 is a wasteful number, since it uses less digits than its factorization.

117578117886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227873.

The product of its digits is 5268480, while the sum is 60.

The spelling of 117578117886 in words is "one hundred seventeen billion, five hundred seventy-eight million, one hundred seventeen thousand, eight hundred eighty-six".