63665898572 has 6 divisors (see below), whose sum is σ = 111415322508. Its totient is φ = 31832949284.

The previous prime is 63665898551. The next prime is 63665898613. The reversal of 63665898572 is 27589856636.

It is a junction number, because it is equal to n+sod(n) for n = 63665898499 and 63665898508.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7958237318 + ... + 7958237325.

It is an arithmetic number, because the mean of its divisors is an integer number (18569220418).

Almost surely, 2^63665898572 is an apocalyptic number.

It is an amenable number.

63665898572 is a deficient number, since it is larger than the sum of its proper divisors (47749423936).

63665898572 is a wasteful number, since it uses less digits than its factorization.

63665898572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15916474647 (or 15916474645 counting only the distinct ones).

The product of its digits is 130636800, while the sum is 65.

The spelling of 63665898572 in words is "sixty-three billion, six hundred sixty-five million, eight hundred ninety-eight thousand, five hundred seventy-two".