117156211557 has 80 divisors (see below), whose sum is σ = 199142226432. Its totient is φ = 60755288160.

The previous prime is 117156211507. The next prime is 117156211607. The reversal of 117156211557 is 755112651711.

It is an interprime number because it is at equal distance from previous prime (117156211507) and next prime (117156211607).

It is not a de Polignac number, because 117156211557 - 2⁸ = 117156211301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117156211507) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 70278838 + ... + 70280504.

Almost surely, 2^117156211557 is an apocalyptic number.

It is an amenable number.

117156211557 is a deficient number, since it is larger than the sum of its proper divisors (81986014875).

117156211557 is an equidigital number, since it uses as much as digits as its factorization.

117156211557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2596 (or 2575 counting only the distinct ones).

The product of its digits is 73500, while the sum is 42.

The spelling of 117156211557 in words is "one hundred seventeen billion, one hundred fifty-six million, two hundred eleven thousand, five hundred fifty-seven".