38618517775 has 6 divisors (see below), whose sum is σ = 47886962072. Its totient is φ = 30894814200.

The previous prime is 38618517761. The next prime is 38618517799. The reversal of 38618517775 is 57771581683.

It is not a de Polignac number, because 38618517775 - 2²⁷ = 38484300047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 772370331 + ... + 772370380.

Almost surely, 2^38618517775 is an apocalyptic number.

38618517775 is a deficient number, since it is larger than the sum of its proper divisors (9268444297).

38618517775 is a wasteful number, since it uses less digits than its factorization.

38618517775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1544740721 (or 1544740716 counting only the distinct ones).

The product of its digits is 9878400, while the sum is 58.

The spelling of 38618517775 in words is "thirty-eight billion, six hundred eighteen million, five hundred seventeen thousand, seven hundred seventy-five".