634564510536 has 64 divisors (see below), whose sum is σ = 1747765512000. Its totient is φ = 190388384000.

The previous prime is 634564510511. The next prime is 634564510537. The reversal of 634564510536 is 635015465436.

It is not an unprimeable number, because it can be changed into a prime (634564510537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11872611 + ... + 11925938.

It is an arithmetic number, because the mean of its divisors is an integer number (27308836125).

Almost surely, 2^634564510536 is an apocalyptic number.

634564510536 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

634564510536 is an abundant number, since it is smaller than the sum of its proper divisors (1113201001464).

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

634564510536 is a wasteful number, since it uses less digits than its factorization.

634564510536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23798670 (or 23798666 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 48.

The spelling of 634564510536 in words is "six hundred thirty-four billion, five hundred sixty-four million, five hundred ten thousand, five hundred thirty-six".