63965923908 has 12 divisors (see below), whose sum is σ = 149253822480. Its totient is φ = 21321974632.

The previous prime is 63965923891. The next prime is 63965923913. The reversal of 63965923908 is 80932956936.

It is a tau number, because it is divible by the number of its divisors (12).

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, 2665246818 + ... + 2665246841.

It is an arithmetic number, because the mean of its divisors is an integer number (12437818540).

Almost surely, 2^63965923908 is an apocalyptic number.

It is an amenable number.

63965923908 is an abundant number, since it is smaller than the sum of its proper divisors (85287898572).

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

63965923908 is a wasteful number, since it uses less digits than its factorization.

63965923908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5330493666 (or 5330493664 counting only the distinct ones).

The product of its (nonzero) digits is 18895680, while the sum is 60.

The spelling of 63965923908 in words is "sixty-three billion, nine hundred sixty-five million, nine hundred twenty-three thousand, nine hundred eight".