117985711151 has 16 divisors (see below), whose sum is σ = 147106602240. Its totient is φ = 91932209280.

The previous prime is 117985711141. The next prime is 117985711163. The reversal of 117985711151 is 151117589711.

It is a cyclic number.

It is not a de Polignac number, because 117985711151 - 2³⁴ = 100805841967 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 117985711096 and 117985711105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117985711141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2791760 + ... + 2833706.

It is an arithmetic number, because the mean of its divisors is an integer number (9194162640).

Almost surely, 2^117985711151 is an apocalyptic number.

117985711151 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

117985711151 is a deficient number, since it is larger than the sum of its proper divisors (29120891089).

117985711151 is a wasteful number, since it uses less digits than its factorization.

117985711151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78494.

The product of its digits is 88200, while the sum is 47.

The spelling of 117985711151 in words is "one hundred seventeen billion, nine hundred eighty-five million, seven hundred eleven thousand, one hundred fifty-one".