636341138457 has 8 divisors (see below), whose sum is σ = 848606899200. Its totient is φ = 424151401680.

The previous prime is 636341138431. The next prime is 636341138519. The reversal of 636341138457 is 754831143636.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 636341138457 - 2⁶ = 636341138393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (636341138557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18986457 + ... + 19019942.

It is an arithmetic number, because the mean of its divisors is an integer number (106075862400).

Almost surely, 2^636341138457 is an apocalyptic number.

It is an amenable number.

636341138457 is a deficient number, since it is larger than the sum of its proper divisors (212265760743).

636341138457 is a wasteful number, since it uses less digits than its factorization.

636341138457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38011983.

The product of its digits is 4354560, while the sum is 51.

The spelling of 636341138457 in words is "six hundred thirty-six billion, three hundred forty-one million, one hundred thirty-eight thousand, four hundred fifty-seven".