117617408687 has 2 divisors, whose sum is σ = 117617408688. Its totient is φ = 117617408686.

The previous prime is 117617408621. The next prime is 117617408707. The reversal of 117617408687 is 786804716711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 117617408687 - 2³² = 113322441391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117617488687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58808704343 + 58808704344.

It is an arithmetic number, because the mean of its divisors is an integer number (58808704344).

Almost surely, 2^117617408687 is an apocalyptic number.

117617408687 is a deficient number, since it is larger than the sum of its proper divisors (1).

117617408687 is an equidigital number, since it uses as much as digits as its factorization.

117617408687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3161088, while the sum is 56.

The spelling of 117617408687 in words is "one hundred seventeen billion, six hundred seventeen million, four hundred eight thousand, six hundred eighty-seven".