117890687156 has 24 divisors (see below), whose sum is σ = 231146854176. Its totient is φ = 52138386720.

The previous prime is 117890687153. The next prime is 117890687177. The reversal of 117890687156 is 651786098711.

It is a super-2 number, since 2×117890687156² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 117890687095 and 117890687104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117890687153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36205586 + ... + 36208841.

It is an arithmetic number, because the mean of its divisors is an integer number (9631118924).

Almost surely, 2^117890687156 is an apocalyptic number.

It is an amenable number.

117890687156 is a deficient number, since it is larger than the sum of its proper divisors (113256167020).

117890687156 is a wasteful number, since it uses less digits than its factorization.

117890687156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72414479 (or 72414477 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 59.

The spelling of 117890687156 in words is "one hundred seventeen billion, eight hundred ninety million, six hundred eighty-seven thousand, one hundred fifty-six".