63643700734636 has 24 divisors (see below), whose sum is σ = 122576845994064. Its totient is φ = 28672946426880.

The previous prime is 63643700734613. The next prime is 63643700734643.

It is a happy number.

63643700734636 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6400206285 + ... + 6400216228.

It is an arithmetic number, because the mean of its divisors is an integer number (5107368583086).

Almost surely, 2^{63643700734636} is an apocalyptic number.

It is an amenable number.

63643700734636 is a deficient number, since it is larger than the sum of its proper divisors (58933145259428).

63643700734636 is a wasteful number, since it uses less digits than its factorization.

63643700734636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12800422641 (or 12800422639 counting only the distinct ones).

The product of its (nonzero) digits is 82301184, while the sum is 58.

The spelling of 63643700734636 in words is "sixty-three trillion, six hundred forty-three billion, seven hundred million, seven hundred thirty-four thousand, six hundred thirty-six".