117688216465 has 16 divisors (see below), whose sum is σ = 141991089408. Its totient is φ = 93640651776.

The previous prime is 117688216441. The next prime is 117688216487. The reversal of 117688216465 is 564612886711.

It is a cyclic number.

It is not a de Polignac number, because 117688216465 - 2⁷ = 117688216337 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4974354 + ... + 4997956.

It is an arithmetic number, because the mean of its divisors is an integer number (8874443088).

Almost surely, 2^117688216465 is an apocalyptic number.

It is an amenable number.

117688216465 is a deficient number, since it is larger than the sum of its proper divisors (24302872943).

117688216465 is a wasteful number, since it uses less digits than its factorization.

117688216465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28968.

The product of its digits is 3870720, while the sum is 55.

It can be divided in two parts, 117688 and 216465, that added together give a triangular number (334153 = T₈₁₇).

The spelling of 117688216465 in words is "one hundred seventeen billion, six hundred eighty-eight million, two hundred sixteen thousand, four hundred sixty-five".