63706744988 has 6 divisors (see below), whose sum is σ = 111486803736. Its totient is φ = 31853372492.

The previous prime is 63706744949. The next prime is 63706745041. The reversal of 63706744988 is 88944760736.

It is a self number, because there is not a number n which added to its sum of digits gives 63706744988.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7963343120 + ... + 7963343127.

It is an arithmetic number, because the mean of its divisors is an integer number (18581133956).

Almost surely, 2^63706744988 is an apocalyptic number.

It is an amenable number.

63706744988 is a deficient number, since it is larger than the sum of its proper divisors (47780058748).

63706744988 is a wasteful number, since it uses less digits than its factorization.

63706744988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15926686251 (or 15926686249 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 62.

The spelling of 63706744988 in words is "sixty-three billion, seven hundred six million, seven hundred forty-four thousand, nine hundred eighty-eight".