63953734488018 has 32 divisors (see below), whose sum is σ = 132358156781760. Its totient is φ = 20576575588800.

The previous prime is 63953734488011. The next prime is 63953734488041. The reversal of 63953734488018 is 81088443735936.

It is not an unprimeable number, because it can be changed into a prime (63953734488011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55098180 + ... + 56246927.

It is an arithmetic number, because the mean of its divisors is an integer number (4136192399430).

Almost surely, 2^{63953734488018} is an apocalyptic number.

63953734488018 is an abundant number, since it is smaller than the sum of its proper divisors (68404422293742).

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

63953734488018 is a wasteful number, since it uses less digits than its factorization.

63953734488018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111348442.

The product of its (nonzero) digits is 418037760, while the sum is 69.

The spelling of 63953734488018 in words is "sixty-three trillion, nine hundred fifty-three billion, seven hundred thirty-four million, four hundred eighty-eight thousand, eighteen".