117981642485 has 32 divisors (see below), whose sum is σ = 167059709952. Its totient is φ = 78274693440.

The previous prime is 117981642469. The next prime is 117981642487. The reversal of 117981642485 is 584246189711.

It is not a de Polignac number, because 117981642485 - 2⁴ = 117981642469 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 117981642485.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117981642487) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6573734 + ... + 6591656.

It is an arithmetic number, because the mean of its divisors is an integer number (5220615936).

Almost surely, 2^117981642485 is an apocalyptic number.

It is an amenable number.

117981642485 is a deficient number, since it is larger than the sum of its proper divisors (49078067467).

117981642485 is a wasteful number, since it uses less digits than its factorization.

117981642485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24033.

The product of its digits is 3870720, while the sum is 56.

The spelling of 117981642485 in words is "one hundred seventeen billion, nine hundred eighty-one million, six hundred forty-two thousand, four hundred eighty-five".