38779088721 has 16 divisors (see below), whose sum is σ = 52230721920. Its totient is φ = 25590314880.

The previous prime is 38779088717. The next prime is 38779088731. The reversal of 38779088721 is 12788097783.

It is not a de Polignac number, because 38779088721 - 2² = 38779088717 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38779088731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 696565 + ... + 750173.

It is an arithmetic number, because the mean of its divisors is an integer number (3264420120).

Almost surely, 2^38779088721 is an apocalyptic number.

It is an amenable number.

38779088721 is a deficient number, since it is larger than the sum of its proper divisors (13451633199).

38779088721 is a wasteful number, since it uses less digits than its factorization.

38779088721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56056.

The product of its (nonzero) digits is 9483264, while the sum is 60.

The spelling of 38779088721 in words is "thirty-eight billion, seven hundred seventy-nine million, eighty-eight thousand, seven hundred twenty-one".