22773645521 has 16 divisors (see below), whose sum is σ = 25558165248. Its totient is φ = 20110032000.

The previous prime is 22773645487. The next prime is 22773645527. The reversal of 22773645521 is 12554637722.

It is a cyclic number.

It is not a de Polignac number, because 22773645521 - 2¹⁸ = 22773383377 is a prime.

It is a super-2 number, since 2×22773645521² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22773645527) 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, 198056 + ... + 291158.

It is an arithmetic number, because the mean of its divisors is an integer number (1597385328).

Almost surely, 2^22773645521 is an apocalyptic number.

It is an amenable number.

22773645521 is a deficient number, since it is larger than the sum of its proper divisors (2784519727).

22773645521 is a wasteful number, since it uses less digits than its factorization.

22773645521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93752.

The product of its digits is 705600, while the sum is 44.

The spelling of 22773645521 in words is "twenty-two billion, seven hundred seventy-three million, six hundred forty-five thousand, five hundred twenty-one".