386157836561 has 4 divisors (see below), whose sum is σ = 441323241792. Its totient is φ = 330992431332.

The previous prime is 386157836549. The next prime is 386157836563. The reversal of 386157836561 is 165638751683.

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 a cyclic number.

It is not a de Polignac number, because 386157836561 - 2³⁴ = 368977967377 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 386157836561.

It is not an unprimeable number, because it can be changed into a prime (386157836563) 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, 27582702605 + ... + 27582702618.

It is an arithmetic number, because the mean of its divisors is an integer number (110330810448).

Almost surely, 2^386157836561 is an apocalyptic number.

It is an amenable number.

386157836561 is a deficient number, since it is larger than the sum of its proper divisors (55165405231).

386157836561 is an equidigital number, since it uses as much as digits as its factorization.

386157836561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55165405230.

The product of its digits is 21772800, while the sum is 59.

The spelling of 386157836561 in words is "three hundred eighty-six billion, one hundred fifty-seven million, eight hundred thirty-six thousand, five hundred sixty-one".