22444448513 has 2 divisors, whose sum is σ = 22444448514. Its totient is φ = 22444448512.

The previous prime is 22444448449. The next prime is 22444448531. The reversal of 22444448513 is 31584444422.

Together with next prime (22444448531) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21341411569 + 1103036944 = 146087^2 + 33212^2 .

It is a cyclic number.

It is not a de Polignac number, because 22444448513 - 2⁶ = 22444448449 is a prime.

It is a super-2 number, since 2×22444448513² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22444448113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11222224256 + 11222224257.

It is an arithmetic number, because the mean of its divisors is an integer number (11222224257).

Almost surely, 2^22444448513 is an apocalyptic number.

It is an amenable number.

22444448513 is a deficient number, since it is larger than the sum of its proper divisors (1).

22444448513 is an equidigital number, since it uses as much as digits as its factorization.

22444448513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 491520, while the sum is 41.

The spelling of 22444448513 in words is "twenty-two billion, four hundred forty-four million, four hundred forty-eight thousand, five hundred thirteen".