117156317256 has 96 divisors (see below), whose sum is σ = 352674803520. Its totient is φ = 34832054400.

The previous prime is 117156317197. The next prime is 117156317279. The reversal of 117156317256 is 652713651711.

117156317256 is a `hidden beast` number, since 1 + 1 + 7 + 1 + 5 + 631 + 7 + 2 + 5 + 6 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

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, 1353540 + ... + 1437491.

It is an arithmetic number, because the mean of its divisors is an integer number (3673695870).

Almost surely, 2^117156317256 is an apocalyptic number.

It is an amenable number.

117156317256 is an abundant number, since it is smaller than the sum of its proper divisors (235518486264).

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

117156317256 is a wasteful number, since it uses less digits than its factorization.

117156317256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2791107 (or 2791100 counting only the distinct ones).

The product of its digits is 264600, while the sum is 45.

Adding to 117156317256 its reverse (652713651711), we get a palindrome (769869968967).

The spelling of 117156317256 in words is "one hundred seventeen billion, one hundred fifty-six million, three hundred seventeen thousand, two hundred fifty-six".