38721134864807 has 16 divisors (see below), whose sum is σ = 39088107768672. Its totient is φ = 38355428897280.

The previous prime is 38721134864779. The next prime is 38721134864857. The reversal of 38721134864807 is 70846843112783.

It is a cyclic number.

It is not a de Polignac number, because 38721134864807 - 2³² = 38716839897511 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38721134864807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38721134864857) 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, 241318868 + ... + 241479270.

It is an arithmetic number, because the mean of its divisors is an integer number (2443006735542).

Almost surely, 2^{38721134864807} is an apocalyptic number.

38721134864807 is a deficient number, since it is larger than the sum of its proper divisors (366972903865).

38721134864807 is a wasteful number, since it uses less digits than its factorization.

38721134864807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164338.

The product of its (nonzero) digits is 43352064, while the sum is 62.

The spelling of 38721134864807 in words is "thirty-eight trillion, seven hundred twenty-one billion, one hundred thirty-four million, eight hundred sixty-four thousand, eight hundred seven".