635664372076 has 12 divisors (see below), whose sum is σ = 1112446604808. Its totient is φ = 317822484992.

The previous prime is 635664372061. The next prime is 635664372121. The reversal of 635664372076 is 670273466536.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2276821 + ... + 2540716.

It is an arithmetic number, because the mean of its divisors is an integer number (92703883734).

Almost surely, 2^635664372076 is an apocalyptic number.

It is an amenable number.

635664372076 is a deficient number, since it is larger than the sum of its proper divisors (476782232732).

635664372076 is a wasteful number, since it uses less digits than its factorization.

635664372076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4850528 (or 4850526 counting only the distinct ones).

The product of its (nonzero) digits is 22861440, while the sum is 55.

The spelling of 635664372076 in words is "six hundred thirty-five billion, six hundred sixty-four million, three hundred seventy-two thousand, seventy-six".