634523490432 has 128 divisors (see below), whose sum is σ = 2016781536000. Its totient is φ = 195237983232.

The previous prime is 634523490427. The next prime is 634523490463. The reversal of 634523490432 is 234094325436.

634523490432 is a `hidden beast` number, since 6 + 3 + 4 + 523 + 4 + 90 + 4 + 32 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7016632 + ... + 7106487.

It is an arithmetic number, because the mean of its divisors is an integer number (15756105750).

Almost surely, 2^634523490432 is an apocalyptic number.

It is an amenable number.

634523490432 is an abundant number, since it is smaller than the sum of its proper divisors (1382258045568).

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

634523490432 is a wasteful number, since it uses less digits than its factorization.

634523490432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14123155 (or 14123137 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 45.

The spelling of 634523490432 in words is "six hundred thirty-four billion, five hundred twenty-three million, four hundred ninety thousand, four hundred thirty-two".