63881319508 has 12 divisors (see below), whose sum is σ = 111794078592. Its totient is φ = 31940154200.

The previous prime is 63881319497. The next prime is 63881319529. The reversal of 63881319508 is 80591318836.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 433533 + ... + 561883.

It is an arithmetic number, because the mean of its divisors is an integer number (9316173216).

Almost surely, 2^63881319508 is an apocalyptic number.

It is an amenable number.

63881319508 is a deficient number, since it is larger than the sum of its proper divisors (47912759084).

63881319508 is a wasteful number, since it uses less digits than its factorization.

63881319508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252782 (or 252780 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 52.

The spelling of 63881319508 in words is "sixty-three billion, eight hundred eighty-one million, three hundred nineteen thousand, five hundred eight".