38779025864 has 16 divisors (see below), whose sum is σ = 72714336000. Its totient is φ = 19388536272.

The previous prime is 38779025843. The next prime is 38779025867. The reversal of 38779025864 is 46852097783.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (38779025867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63209 + ... + 285575.

It is an arithmetic number, because the mean of its divisors is an integer number (4544646000).

Almost surely, 2^38779025864 is an apocalyptic number.

It is an amenable number.

38779025864 is a deficient number, since it is larger than the sum of its proper divisors (33935310136).

38779025864 is a wasteful number, since it uses less digits than its factorization.

38779025864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244172 (or 244168 counting only the distinct ones).

The product of its (nonzero) digits is 20321280, while the sum is 59.

The spelling of 38779025864 in words is "thirty-eight billion, seven hundred seventy-nine million, twenty-five thousand, eight hundred sixty-four".