636057979903357 has 4 divisors (see below), whose sum is σ = 693881432621856. Its totient is φ = 578234527184860.

The previous prime is 636057979903273. The next prime is 636057979903387. The reversal of 636057979903357 is 753309979750636.

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 636057979903357 - 2²⁷ = 636057845685629 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 (636057979903387) 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, 28911726359233 + ... + 28911726359254.

It is an arithmetic number, because the mean of its divisors is an integer number (173470358155464).

Almost surely, 2^{636057979903357} is an apocalyptic number.

It is an amenable number.

636057979903357 is a deficient number, since it is larger than the sum of its proper divisors (57823452718499).

636057979903357 is a wasteful number, since it uses less digits than its factorization.

636057979903357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57823452718498.

The product of its (nonzero) digits is 6076142100, while the sum is 79.

The spelling of 636057979903357 in words is "six hundred thirty-six trillion, fifty-seven billion, nine hundred seventy-nine million, nine hundred three thousand, three hundred fifty-seven".