77117105918 has 32 divisors (see below), whose sum is σ = 120058675200. Its totient is φ = 37111697280.

The previous prime is 77117105917. The next prime is 77117105941. The reversal of 77117105918 is 81950171177.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77117105917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8710358 + ... + 8719206.

It is an arithmetic number, because the mean of its divisors is an integer number (3751833600).

Almost surely, 2^77117105918 is an apocalyptic number.

77117105918 is a deficient number, since it is larger than the sum of its proper divisors (42941569282).

77117105918 is a wasteful number, since it uses less digits than its factorization.

77117105918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9632.

The product of its (nonzero) digits is 123480, while the sum is 47.

The spelling of 77117105918 in words is "seventy-seven billion, one hundred seventeen million, one hundred five thousand, nine hundred eighteen".