117216657637 has 8 divisors (see below), whose sum is σ = 123063424704. Its totient is φ = 111432423168.

The previous prime is 117216657599. The next prime is 117216657641. The reversal of 117216657637 is 736756612711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 117216657637 - 2²⁷ = 117082439909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117216657697) 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, 15629308 + ... + 15636805.

It is an arithmetic number, because the mean of its divisors is an integer number (15382928088).

Almost surely, 2^117216657637 is an apocalyptic number.

It is an amenable number.

117216657637 is a deficient number, since it is larger than the sum of its proper divisors (5846767067).

117216657637 is a wasteful number, since it uses less digits than its factorization.

117216657637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31266299.

The product of its digits is 2222640, while the sum is 52.

The spelling of 117216657637 in words is "one hundred seventeen billion, two hundred sixteen million, six hundred fifty-seven thousand, six hundred thirty-seven".