22721922539 has 8 divisors (see below), whose sum is σ = 22804541760. Its totient is φ = 22639359816.

The previous prime is 22721922523. The next prime is 22721922563. The reversal of 22721922539 is 93522912722.

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

It is a cyclic number.

It is not a de Polignac number, because 22721922539 - 2⁴ = 22721922523 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22721922539.

It is not an unprimeable number, because it can be changed into a prime (22721922599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 897152 + ... + 922130.

It is an arithmetic number, because the mean of its divisors is an integer number (2850567720).

Almost surely, 2^22721922539 is an apocalyptic number.

22721922539 is a deficient number, since it is larger than the sum of its proper divisors (82619221).

22721922539 is a wasteful number, since it uses less digits than its factorization.

22721922539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28249.

The product of its digits is 272160, while the sum is 44.

The spelling of 22721922539 in words is "twenty-two billion, seven hundred twenty-one million, nine hundred twenty-two thousand, five hundred thirty-nine".