636064270864 has 40 divisors (see below), whose sum is σ = 1377199041120. Its totient is φ = 282068409600.

The previous prime is 636064270861. The next prime is 636064270903. The reversal of 636064270864 is 468072460636.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (636064270861) 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, 44065974 + ... + 44080405.

It is an arithmetic number, because the mean of its divisors is an integer number (34429976028).

Almost surely, 2^636064270864 is an apocalyptic number.

It is an amenable number.

636064270864 is an abundant number, since it is smaller than the sum of its proper divisors (741134770256).

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

636064270864 is a wasteful number, since it uses less digits than its factorization.

636064270864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88146439 (or 88146433 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 52.

The spelling of 636064270864 in words is "six hundred thirty-six billion, sixty-four million, two hundred seventy thousand, eight hundred sixty-four".