22641720616 has 8 divisors (see below), whose sum is σ = 42453226170. Its totient is φ = 11320860304.

The previous prime is 22641720613. The next prime is 22641720653. The reversal of 22641720616 is 61602714622.

It can be written as a sum of positive squares in only one way, i.e., 13569920100 + 9071800516 = 116490^2 + 95246^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (22641720611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1415107531 + ... + 1415107546.

Almost surely, 2^22641720616 is an apocalyptic number.

It is an amenable number.

22641720616 is a deficient number, since it is larger than the sum of its proper divisors (19811505554).

22641720616 is a wasteful number, since it uses less digits than its factorization.

22641720616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2830215083 (or 2830215079 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The spelling of 22641720616 in words is "twenty-two billion, six hundred forty-one million, seven hundred twenty thousand, six hundred sixteen".