22520331613 has 8 divisors (see below), whose sum is σ = 25679292408. Its totient is φ = 19565174784.

The previous prime is 22520331569. The next prime is 22520331637. The reversal of 22520331613 is 31613302522.

It can be written as a sum of positive squares in 4 ways, for example, as 4467184569 + 18053147044 = 66837^2 + 134362^2 .

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 22520331613 - 2²¹ = 22518234461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22520331313) 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, 50950756 + ... + 50951197.

It is an arithmetic number, because the mean of its divisors is an integer number (3209911551).

Almost surely, 2^22520331613 is an apocalyptic number.

It is an amenable number.

22520331613 is a deficient number, since it is larger than the sum of its proper divisors (3158960795).

22520331613 is a wasteful number, since it uses less digits than its factorization.

22520331613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101901983.

The product of its (nonzero) digits is 6480, while the sum is 28.

The spelling of 22520331613 in words is "twenty-two billion, five hundred twenty million, three hundred thirty-one thousand, six hundred thirteen".