38678651645117 has 16 divisors (see below), whose sum is σ = 42411010247424. Its totient is φ = 34982682840000.

The previous prime is 38678651645093. The next prime is 38678651645173. The reversal of 38678651645117 is 71154615687683.

It is a cyclic number.

It is not a de Polignac number, because 38678651645117 - 2⁸ = 38678651644861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38678651645317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7164998 + ... + 11344359.

It is an arithmetic number, because the mean of its divisors is an integer number (2650688140464).

Almost surely, 2^{38678651645117} is an apocalyptic number.

It is an amenable number.

38678651645117 is a deficient number, since it is larger than the sum of its proper divisors (3732358602307).

38678651645117 is a wasteful number, since it uses less digits than its factorization.

38678651645117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18510340.

The product of its digits is 203212800, while the sum is 68.

The spelling of 38678651645117 in words is "thirty-eight trillion, six hundred seventy-eight billion, six hundred fifty-one million, six hundred forty-five thousand, one hundred seventeen".