63660646626 has 32 divisors (see below), whose sum is σ = 131447205888. Its totient is φ = 20532759120.

The previous prime is 63660646613. The next prime is 63660646663. The reversal of 63660646626 is 62664606636.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1554651 + ... + 1595073.

It is an arithmetic number, because the mean of its divisors is an integer number (4107725184).

Almost surely, 2^63660646626 is an apocalyptic number.

63660646626 is an abundant number, since it is smaller than the sum of its proper divisors (67786559262).

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

63660646626 is a wasteful number, since it uses less digits than its factorization.

63660646626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48926.

The product of its (nonzero) digits is 6718464, while the sum is 51.

The spelling of 63660646626 in words is "sixty-three billion, six hundred sixty million, six hundred forty-six thousand, six hundred twenty-six".