38668492799 has 4 divisors (see below), whose sum is σ = 38841894336. Its totient is φ = 38495091264.

The previous prime is 38668492777. The next prime is 38668492817. The reversal of 38668492799 is 99729486683.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99729486683 = 10723 ⋅9300521.

It is a cyclic number.

It is not a de Polignac number, because 38668492799 - 2⁸ = 38668492543 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 (38668495799) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86700434 + ... + 86700879.

It is an arithmetic number, because the mean of its divisors is an integer number (9710473584).

Almost surely, 2^38668492799 is an apocalyptic number.

38668492799 is a deficient number, since it is larger than the sum of its proper divisors (173401537).

38668492799 is a wasteful number, since it uses less digits than its factorization.

38668492799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173401536.

The product of its digits is 282175488, while the sum is 71.

The spelling of 38668492799 in words is "thirty-eight billion, six hundred sixty-eight million, four hundred ninety-two thousand, seven hundred ninety-nine".