634908983522 has 162 divisors, whose sum is σ = 1171404111297. Its totient is φ = 257826025600.

The previous prime is 634908983521. The next prime is 634908983593. The reversal of 634908983522 is 225389809436.

It can be written as a sum of positive squares in 2 ways, for example, as 581084519521 + 53824464001 = 762289^2 + 232001^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=563431.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (634908983521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 4846633397 + ... + 4846633527.

Almost surely, 2^634908983522 is an apocalyptic number.

634908983522 is a deficient number, since it is larger than the sum of its proper divisors (536495127775).

634908983522 is a wasteful number, since it uses less digits than its factorization.

634908983522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366 (or 184 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 59.

The spelling of 634908983522 in words is "six hundred thirty-four billion, nine hundred eight million, nine hundred eighty-three thousand, five hundred twenty-two".