38064091521 has 4 divisors (see below), whose sum is σ = 50752122032. Its totient is φ = 25376061012.

The previous prime is 38064091463. The next prime is 38064091529. The reversal of 38064091521 is 12519046083.

38064091521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 38064091521 - 2³¹ = 35916607873 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 38064091521.

It is not an unprimeable number, because it can be changed into a prime (38064091529) 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, 6344015251 + ... + 6344015256.

It is an arithmetic number, because the mean of its divisors is an integer number (12688030508).

Almost surely, 2^38064091521 is an apocalyptic number.

It is an amenable number.

38064091521 is a deficient number, since it is larger than the sum of its proper divisors (12688030511).

38064091521 is a wasteful number, since it uses less digits than its factorization.

38064091521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12688030510.

The product of its (nonzero) digits is 51840, while the sum is 39.

The spelling of 38064091521 in words is "thirty-eight billion, sixty-four million, ninety-one thousand, five hundred twenty-one".