634564504424 has 8 divisors (see below), whose sum is σ = 1189808445810. Its totient is φ = 317282252208.

The previous prime is 634564504423. The next prime is 634564504433. The reversal of 634564504424 is 424405465436.

It can be written as a sum of positive squares in only one way, i.e., 483928922500 + 150635581924 = 695650^2 + 388118^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×634564504424² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (634564504423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39660281519 + ... + 39660281534.

Almost surely, 2^634564504424 is an apocalyptic number.

It is an amenable number.

634564504424 is a deficient number, since it is larger than the sum of its proper divisors (555243941386).

634564504424 is a wasteful number, since it uses less digits than its factorization.

634564504424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79320563059 (or 79320563055 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 47.

The spelling of 634564504424 in words is "six hundred thirty-four billion, five hundred sixty-four million, five hundred four thousand, four hundred twenty-four".