63659808957 has 8 divisors (see below), whose sum is σ = 84991285440. Its totient is φ = 42384102560.

The previous prime is 63659808899. The next prime is 63659809007. The reversal of 63659808957 is 75980895636.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 63659808957 - 2¹² = 63659804861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63659808257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13939857 + ... + 13944422.

It is an arithmetic number, because the mean of its divisors is an integer number (10623910680).

Almost surely, 2^63659808957 is an apocalyptic number.

It is an amenable number.

63659808957 is a deficient number, since it is larger than the sum of its proper divisors (21331476483).

63659808957 is a wasteful number, since it uses less digits than its factorization.

63659808957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27885043.

The product of its (nonzero) digits is 97977600, while the sum is 66.

The spelling of 63659808957 in words is "sixty-three billion, six hundred fifty-nine million, eight hundred eight thousand, nine hundred fifty-seven".