12722468513 has 2 divisors, whose sum is σ = 12722468514. Its totient is φ = 12722468512.

The previous prime is 12722468509. The next prime is 12722468593. The reversal of 12722468513 is 31586422721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8227034209 + 4495434304 = 90703^2 + 67048^2 .

It is a cyclic number.

It is not a de Polignac number, because 12722468513 - 2² = 12722468509 is a prime.

It is a super-2 number, since 2×12722468513² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12722468593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6361234256 + 6361234257.

It is an arithmetic number, because the mean of its divisors is an integer number (6361234257).

Almost surely, 2^12722468513 is an apocalyptic number.

It is an amenable number.

12722468513 is a deficient number, since it is larger than the sum of its proper divisors (1).

12722468513 is an equidigital number, since it uses as much as digits as its factorization.

12722468513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 41.

The spelling of 12722468513 in words is "twelve billion, seven hundred twenty-two million, four hundred sixty-eight thousand, five hundred thirteen".