634166046544 has 20 divisors (see below), whose sum is σ = 1233795049300. Its totient is φ = 315767324160.

The previous prime is 634166046511. The next prime is 634166046559. The reversal of 634166046544 is 445640661436.

It can be written as a sum of positive squares in 2 ways, for example, as 533542593600 + 100623452944 = 730440^2 + 317212^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82227219 + ... + 82234930.

It is an arithmetic number, because the mean of its divisors is an integer number (61689752465).

Almost surely, 2^634166046544 is an apocalyptic number.

It is an amenable number.

634166046544 is a deficient number, since it is larger than the sum of its proper divisors (599629002756).

634166046544 is a wasteful number, since it uses less digits than its factorization.

634166046544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164462398 (or 164462392 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 49.

The spelling of 634166046544 in words is "six hundred thirty-four billion, one hundred sixty-six million, forty-six thousand, five hundred forty-four".