6436656264 has 16 divisors (see below), whose sum is σ = 16091640720. Its totient is φ = 2145552080.

The previous prime is 6436656221. The next prime is 6436656287. The reversal of 6436656264 is 4626566346.

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, 134096982 + ... + 134097029.

It is an arithmetic number, because the mean of its divisors is an integer number (1005727545).

Almost surely, 2^6436656264 is an apocalyptic number.

It is an amenable number.

6436656264 is an abundant number, since it is smaller than the sum of its proper divisors (9654984456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6436656264 is a wasteful number, since it uses less digits than its factorization.

6436656264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268194020 (or 268194016 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 48.

The square root of 6436656264 is about 80228.7745388149. The cubic root of 6436656264 is about 1860.1734397176.

The spelling of 6436656264 in words is "six billion, four hundred thirty-six million, six hundred fifty-six thousand, two hundred sixty-four".