63648017221564 has 24 divisors (see below), whose sum is σ = 113061860229248. Its totient is φ = 31344757844400.

The previous prime is 63648017221511. The next prime is 63648017221603. The reversal of 63648017221564 is 46512271084636.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14183694 + ... + 18123829.

Almost surely, 2^{63648017221564} is an apocalyptic number.

It is an amenable number.

63648017221564 is a deficient number, since it is larger than the sum of its proper divisors (49413843007684).

63648017221564 is a wasteful number, since it uses less digits than its factorization.

63648017221564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32314945 (or 32314943 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 55.

The spelling of 63648017221564 in words is "sixty-three trillion, six hundred forty-eight billion, seventeen million, two hundred twenty-one thousand, five hundred sixty-four".