634640546364 has 48 divisors (see below), whose sum is σ = 1622565254016. Its totient is φ = 191468104000.

The previous prime is 634640546357. The next prime is 634640546381. The reversal of 634640546364 is 463645046436.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10560087 + ... + 10620014.

It is an arithmetic number, because the mean of its divisors is an integer number (33803442792).

Almost surely, 2^634640546364 is an apocalyptic number.

It is an amenable number.

634640546364 is an abundant number, since it is smaller than the sum of its proper divisors (987924707652).

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

634640546364 is a wasteful number, since it uses less digits than its factorization.

634640546364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21180346 (or 21180344 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 51.

The spelling of 634640546364 in words is "six hundred thirty-four billion, six hundred forty million, five hundred forty-six thousand, three hundred sixty-four".