636493639713 has 8 divisors (see below), whose sum is σ = 848744532768. Its totient is φ = 424285919904.

The previous prime is 636493639619. The next prime is 636493639759. The reversal of 636493639713 is 317936394636.

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

It is not a de Polignac number, because 636493639713 - 2¹⁷ = 636493508641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (636493639513) 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, 10758895 + ... + 10817892.

It is an arithmetic number, because the mean of its divisors is an integer number (106093066596).

Almost surely, 2^636493639713 is an apocalyptic number.

It is an amenable number.

636493639713 is a deficient number, since it is larger than the sum of its proper divisors (212250893055).

636493639713 is a wasteful number, since it uses less digits than its factorization.

636493639713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21586623.

The product of its digits is 39680928, while the sum is 60.

The spelling of 636493639713 in words is "six hundred thirty-six billion, four hundred ninety-three million, six hundred thirty-nine thousand, seven hundred thirteen".