22717948013 has 4 divisors (see below), whose sum is σ = 23272044348. Its totient is φ = 22163851680.

The previous prime is 22717948009. The next prime is 22717948031. The reversal of 22717948013 is 31084971722.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12232802404 + 10485145609 = 110602^2 + 102397^2 .

It is a cyclic number.

It is not a de Polignac number, because 22717948013 - 2² = 22717948009 is a prime.

It is a super-2 number, since 2×22717948013² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22717948073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277048106 + ... + 277048187.

It is an arithmetic number, because the mean of its divisors is an integer number (5818011087).

Almost surely, 2^22717948013 is an apocalyptic number.

It is an amenable number.

22717948013 is a deficient number, since it is larger than the sum of its proper divisors (554096335).

22717948013 is an equidigital number, since it uses as much as digits as its factorization.

22717948013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554096334.

The product of its (nonzero) digits is 169344, while the sum is 44.

The spelling of 22717948013 in words is "twenty-two billion, seven hundred seventeen million, nine hundred forty-eight thousand, thirteen".