63724122621 has 12 divisors (see below), whose sum is σ = 96047953248. Its totient is φ = 40635672264.

The previous prime is 63724122557. The next prime is 63724122643. The reversal of 63724122621 is 12622142736.

63724122621 is a `hidden beast` number, since 6 + 3 + 7 + 2 + 4 + 1 + 22 + 621 = 666.

It is not a de Polignac number, because 63724122621 - 2⁶ = 63724122557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63724122221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 153922795 + ... + 153923208.

It is an arithmetic number, because the mean of its divisors is an integer number (8003996104).

Almost surely, 2^63724122621 is an apocalyptic number.

It is an amenable number.

63724122621 is a deficient number, since it is larger than the sum of its proper divisors (32323830627).

63724122621 is a wasteful number, since it uses less digits than its factorization.

63724122621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307846032 (or 307846029 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The spelling of 63724122621 in words is "sixty-three billion, seven hundred twenty-four million, one hundred twenty-two thousand, six hundred twenty-one".