63631355344 has 10 divisors (see below), whose sum is σ = 123285751010. Its totient is φ = 31815677664.

The previous prime is 63631355339. The next prime is 63631355363. The reversal of 63631355344 is 44355313636.

It can be written as a sum of positive squares in only one way, i.e., 36542145600 + 27089209744 = 191160^2 + 164588^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 63631355344.

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 as a sum of consecutive naturals, namely, 1988479839 + ... + 1988479870.

It is an arithmetic number, because the mean of its divisors is an integer number (12328575101).

Almost surely, 2^63631355344 is an apocalyptic number.

It is an amenable number.

63631355344 is a deficient number, since it is larger than the sum of its proper divisors (59654395666).

63631355344 is a wasteful number, since it uses less digits than its factorization.

63631355344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3976959717 (or 3976959711 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 43.

The spelling of 63631355344 in words is "sixty-three billion, six hundred thirty-one million, three hundred fifty-five thousand, three hundred forty-four".