63721094868063 has 16 divisors (see below), whose sum is σ = 94423378739200. Its totient is φ = 42470939391480.

The previous prime is 63721094868037. The next prime is 63721094868077. The reversal of 63721094868063 is 36086849012736.

63721094868063 is a `hidden beast` number, since 6 + 3 + 7 + 2 + 10 + 9 + 486 + 80 + 63 = 666.

It is not a de Polignac number, because 63721094868063 - 2¹⁰ = 63721094867039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63721094868163) 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, 271839583 + ... + 272073888.

It is an arithmetic number, because the mean of its divisors is an integer number (5901461171200).

Almost surely, 2^{63721094868063} is an apocalyptic number.

63721094868063 is a deficient number, since it is larger than the sum of its proper divisors (30702283871137).

63721094868063 is a wasteful number, since it uses less digits than its factorization.

63721094868063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543917819 (or 543917813 counting only the distinct ones).

The product of its (nonzero) digits is 62705664, while the sum is 63.

The spelling of 63721094868063 in words is "sixty-three trillion, seven hundred twenty-one billion, ninety-four million, eight hundred sixty-eight thousand, sixty-three".