38638856715 has 32 divisors (see below), whose sum is σ = 62216073216. Its totient is φ = 20476494720.

The previous prime is 38638856681. The next prime is 38638856747. The reversal of 38638856715 is 51765883683.

38638856715 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 38638856715 - 2⁷ = 38638856587 is a prime.

It is a super-2 number, since 2×38638856715² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1553830 + ... + 1578500.

It is an arithmetic number, because the mean of its divisors is an integer number (1944252288).

Almost surely, 2^38638856715 is an apocalyptic number.

38638856715 is a deficient number, since it is larger than the sum of its proper divisors (23577216501).

38638856715 is a wasteful number, since it uses less digits than its factorization.

38638856715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25339.

The product of its digits is 29030400, while the sum is 60.

The spelling of 38638856715 in words is "thirty-eight billion, six hundred thirty-eight million, eight hundred fifty-six thousand, seven hundred fifteen".