63566425506 has 16 divisors (see below), whose sum is σ = 127151234784. Its totient is φ = 21185744544.

The previous prime is 63566425499. The next prime is 63566425519. The reversal of 63566425506 is 60552466536.

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, 720835 + ... + 804198.

It is an arithmetic number, because the mean of its divisors is an integer number (7946952174).

Almost surely, 2^63566425506 is an apocalyptic number.

63566425506 is an abundant number, since it is smaller than the sum of its proper divisors (63584809278).

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

63566425506 is a wasteful number, since it uses less digits than its factorization.

63566425506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531985.

The product of its (nonzero) digits is 3888000, while the sum is 48.

The spelling of 63566425506 in words is "sixty-three billion, five hundred sixty-six million, four hundred twenty-five thousand, five hundred six".