63611225621 has 8 divisors (see below), whose sum is σ = 63896827200. Its totient is φ = 63326259360.

The previous prime is 63611225599. The next prime is 63611225627. The reversal of 63611225621 is 12652211636.

63611225621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63611225621 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63611225627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42440 + ... + 359198.

It is an arithmetic number, because the mean of its divisors is an integer number (7987103400).

Almost surely, 2^63611225621 is an apocalyptic number.

It is an amenable number.

63611225621 is a deficient number, since it is larger than the sum of its proper divisors (285601579).

63611225621 is a wasteful number, since it uses less digits than its factorization.

63611225621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317659.

The product of its digits is 25920, while the sum is 35.

The spelling of 63611225621 in words is "sixty-three billion, six hundred eleven million, two hundred twenty-five thousand, six hundred twenty-one".