636070859423 has 4 divisors (see below), whose sum is σ = 639267195600. Its totient is φ = 632874523248.

The previous prime is 636070859401. The next prime is 636070859447. The reversal of 636070859423 is 324958070636.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 636070859423 - 2³⁶ = 567351382687 is a prime.

It is a super-2 number, since 2×636070859423² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (636070850423) 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, 1598167790 + ... + 1598168187.

It is an arithmetic number, because the mean of its divisors is an integer number (159816798900).

Almost surely, 2^636070859423 is an apocalyptic number.

636070859423 is a deficient number, since it is larger than the sum of its proper divisors (3196336177).

636070859423 is a wasteful number, since it uses less digits than its factorization.

636070859423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3196336176.

The product of its (nonzero) digits is 6531840, while the sum is 53.

The spelling of 636070859423 in words is "six hundred thirty-six billion, seventy million, eight hundred fifty-nine thousand, four hundred twenty-three".