63807077728 has 12 divisors (see below), whose sum is σ = 125620184340. Its totient is φ = 31903538848.

The previous prime is 63807077701. The next prime is 63807077771. The reversal of 63807077728 is 82777070836.

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, 996985558 + ... + 996985621.

It is an arithmetic number, because the mean of its divisors is an integer number (10468348695).

Almost surely, 2^63807077728 is an apocalyptic number.

It is an amenable number.

63807077728 is a deficient number, since it is larger than the sum of its proper divisors (61813106612).

63807077728 is a wasteful number, since it uses less digits than its factorization.

63807077728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1993971189 (or 1993971181 counting only the distinct ones).

The product of its (nonzero) digits is 5531904, while the sum is 55.

The spelling of 63807077728 in words is "sixty-three billion, eight hundred seven million, seventy-seven thousand, seven hundred twenty-eight".