63926979568 has 20 divisors (see below), whose sum is σ = 130377393160. Its totient is φ = 30281200704.

The previous prime is 63926979553. The next prime is 63926979569. The reversal of 63926979568 is 86597962936.

63926979568 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 63926979497 and 63926979506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63926979569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105142755 + ... + 105143362.

It is an arithmetic number, because the mean of its divisors is an integer number (6518869658).

Almost surely, 2^63926979568 is an apocalyptic number.

It is an amenable number.

63926979568 is an abundant number, since it is smaller than the sum of its proper divisors (66450413592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63926979568 is a wasteful number, since it uses less digits than its factorization.

63926979568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210286144 (or 210286138 counting only the distinct ones).

The product of its digits is 264539520, while the sum is 70.

The spelling of 63926979568 in words is "sixty-three billion, nine hundred twenty-six million, nine hundred seventy-nine thousand, five hundred sixty-eight".