117431642479 has 4 divisors (see below), whose sum is σ = 117438192784. Its totient is φ = 117425092176.

The previous prime is 117431642467. The next prime is 117431642513. The reversal of 117431642479 is 974246134711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 974246134711 = 103 ⋅9458700337.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117431642479 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 (117431642879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3248187 + ... + 3284140.

It is an arithmetic number, because the mean of its divisors is an integer number (29359548196).

Almost surely, 2^117431642479 is an apocalyptic number.

117431642479 is a deficient number, since it is larger than the sum of its proper divisors (6550305).

117431642479 is an equidigital number, since it uses as much as digits as its factorization.

117431642479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6550304.

The product of its digits is 1016064, while the sum is 49.

The spelling of 117431642479 in words is "one hundred seventeen billion, four hundred thirty-one million, six hundred forty-two thousand, four hundred seventy-nine".