63473516656 has 20 divisors (see below), whose sum is σ = 134159933304. Its totient is φ = 28851598400.

The previous prime is 63473516653. The next prime is 63473516671. The reversal of 63473516656 is 65661537436.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63473516653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180322315 + ... + 180322666.

Almost surely, 2^63473516656 is an apocalyptic number.

It is an amenable number.

63473516656 is an abundant number, since it is smaller than the sum of its proper divisors (70686416648).

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

63473516656 is a wasteful number, since it uses less digits than its factorization.

63473516656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360645000 (or 360644994 counting only the distinct ones).

The product of its digits is 8164800, while the sum is 52.

The spelling of 63473516656 in words is "sixty-three billion, four hundred seventy-three million, five hundred sixteen thousand, six hundred fifty-six".