22721565546652 has 24 divisors (see below), whose sum is σ = 45443405712096. Its totient is φ = 9737754958848.

The previous prime is 22721565546643. The next prime is 22721565546653. The reversal of 22721565546652 is 25664556512722.

It is a hoax number, since the sum of its digits (58) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22721565546653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2435028 + ... + 7167460.

It is an arithmetic number, because the mean of its divisors is an integer number (1893475238004).

Almost surely, 2^{22721565546652} is an apocalyptic number.

It is an amenable number.

22721565546652 is an abundant number, since it is smaller than the sum of its proper divisors (22721840165444).

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

22721565546652 is a wasteful number, since it uses less digits than its factorization.

22721565546652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4903917 (or 4903915 counting only the distinct ones).

The product of its digits is 60480000, while the sum is 58.

The spelling of 22721565546652 in words is "twenty-two trillion, seven hundred twenty-one billion, five hundred sixty-five million, five hundred forty-six thousand, six hundred fifty-two".