117971316455 has 4 divisors (see below), whose sum is σ = 141565579752. Its totient is φ = 94377053160.

The previous prime is 117971316443. The next prime is 117971316457. The reversal of 117971316455 is 554613179711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 554613179711 = 298579 ⋅1857509.

It is a de Polignac number, because none of the positive numbers 2^k-117971316455 is a prime.

It is a super-2 number, since 2×117971316455² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117971316457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11797131641 + ... + 11797131650.

It is an arithmetic number, because the mean of its divisors is an integer number (35391394938).

Almost surely, 2^117971316455 is an apocalyptic number.

117971316455 is a deficient number, since it is larger than the sum of its proper divisors (23594263297).

117971316455 is an equidigital number, since it uses as much as digits as its factorization.

117971316455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23594263296.

The product of its digits is 793800, while the sum is 50.

The spelling of 117971316455 in words is "one hundred seventeen billion, nine hundred seventy-one million, three hundred sixteen thousand, four hundred fifty-five".