63661507472 has 20 divisors (see below), whose sum is σ = 123387102720. Its totient is φ = 31819674528.

The previous prime is 63661507463. The next prime is 63661507499. The reversal of 63661507472 is 27470516636.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

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, 644948 + ... + 737075.

It is an arithmetic number, because the mean of its divisors is an integer number (6169355136).

Almost surely, 2^63661507472 is an apocalyptic number.

It is an amenable number.

63661507472 is a deficient number, since it is larger than the sum of its proper divisors (59725595248).

63661507472 is a wasteful number, since it uses less digits than its factorization.

63661507472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1384910 (or 1384904 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 47.

The spelling of 63661507472 in words is "sixty-three billion, six hundred sixty-one million, five hundred seven thousand, four hundred seventy-two".