38664390916857 has 8 divisors (see below), whose sum is σ = 51552550684960. Its totient is φ = 25776245880000.

The previous prime is 38664390916849. The next prime is 38664390916859. The reversal of 38664390916857 is 75861909346683.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 38664390916857 - 2³ = 38664390916849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38664390916859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6331569 + ... + 10835937.

It is an arithmetic number, because the mean of its divisors is an integer number (6444068835620).

Almost surely, 2^{38664390916857} is an apocalyptic number.

It is an amenable number.

38664390916857 is a deficient number, since it is larger than the sum of its proper divisors (12888159768103).

38664390916857 is a wasteful number, since it uses less digits than its factorization.

38664390916857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7365623.

The product of its (nonzero) digits is 1410877440, while the sum is 75.

The spelling of 38664390916857 in words is "thirty-eight trillion, six hundred sixty-four billion, three hundred ninety million, nine hundred sixteen thousand, eight hundred fifty-seven".