636085649072 has 20 divisors (see below), whose sum is σ = 1232575391376. Its totient is φ = 318001677120.

The previous prime is 636085649039. The next prime is 636085649081. The reversal of 636085649072 is 270946580636.

It is a happy number.

It is a super-2 number, since 2×636085649072² (a number of 24 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 636085648999 and 636085649017.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2443988 + ... + 2691699.

Almost surely, 2^636085649072 is an apocalyptic number.

It is an amenable number.

636085649072 is a deficient number, since it is larger than the sum of its proper divisors (596489742304).

636085649072 is a wasteful number, since it uses less digits than its factorization.

636085649072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5143436 (or 5143430 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 56.

The spelling of 636085649072 in words is "six hundred thirty-six billion, eighty-five million, six hundred forty-nine thousand, seventy-two".