38311755393 has 4 divisors (see below), whose sum is σ = 51082340528. Its totient is φ = 25541170260.

The previous prime is 38311755359. The next prime is 38311755397. The reversal of 38311755393 is 39355711383.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 38311755393 - 2²¹ = 38309658241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38311755397) 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, 6385292563 + ... + 6385292568.

It is an arithmetic number, because the mean of its divisors is an integer number (12770585132).

Almost surely, 2^38311755393 is an apocalyptic number.

It is an amenable number.

38311755393 is a deficient number, since it is larger than the sum of its proper divisors (12770585135).

38311755393 is a wasteful number, since it uses less digits than its factorization.

38311755393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12770585134.

The product of its digits is 1020600, while the sum is 48.

The spelling of 38311755393 in words is "thirty-eight billion, three hundred eleven million, seven hundred fifty-five thousand, three hundred ninety-three".