117487313917 has 4 divisors (see below), whose sum is σ = 117488000896. Its totient is φ = 117486626940.

The previous prime is 117487313861. The next prime is 117487313927. The reversal of 117487313917 is 719313784711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 719313784711 = 8527 ⋅84357193.

It is a cyclic number.

It is not a de Polignac number, because 117487313917 - 2²³ = 117478925309 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 (117487313927) 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, 138292 + ... + 504082.

It is an arithmetic number, because the mean of its divisors is an integer number (29372000224).

Almost surely, 2^117487313917 is an apocalyptic number.

It is an amenable number.

117487313917 is a deficient number, since it is larger than the sum of its proper divisors (686979).

117487313917 is an equidigital number, since it uses as much as digits as its factorization.

117487313917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686978.

The product of its digits is 889056, while the sum is 52.

The spelling of 117487313917 in words is "one hundred seventeen billion, four hundred eighty-seven million, three hundred thirteen thousand, nine hundred seventeen".