775138022115 has 16 divisors (see below), whose sum is σ = 1240331867808. Its totient is φ = 413369934336.

The previous prime is 775138022107. The next prime is 775138022143. The reversal of 775138022115 is 511220831577.

It is not a de Polignac number, because 775138022115 - 2³ = 775138022107 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2139622 + ... + 2475531.

It is an arithmetic number, because the mean of its divisors is an integer number (77520741738).

Almost surely, 2^775138022115 is an apocalyptic number.

775138022115 is a deficient number, since it is larger than the sum of its proper divisors (465193845693).

775138022115 is a wasteful number, since it uses less digits than its factorization.

775138022115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4626358.

The product of its (nonzero) digits is 117600, while the sum is 42.

The spelling of 775138022115 in words is "seven hundred seventy-five billion, one hundred thirty-eight million, twenty-two thousand, one hundred fifteen".