13244512549 has 2 divisors, whose sum is σ = 13244512550. Its totient is φ = 13244512548.

The previous prime is 13244512529. The next prime is 13244512573. The reversal of 13244512549 is 94521544231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12233908449 + 1010604100 = 110607^2 + 31790^2 .

It is a cyclic number.

It is not a de Polignac number, because 13244512549 - 2²³ = 13236123941 is a prime.

It is a super-2 number, since 2×13244512549² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13244512529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6622256274 + 6622256275.

It is an arithmetic number, because the mean of its divisors is an integer number (6622256275).

Almost surely, 2^13244512549 is an apocalyptic number.

It is an amenable number.

13244512549 is a deficient number, since it is larger than the sum of its proper divisors (1).

13244512549 is an equidigital number, since it uses as much as digits as its factorization.

13244512549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172800, while the sum is 40.

The spelling of 13244512549 in words is "thirteen billion, two hundred forty-four million, five hundred twelve thousand, five hundred forty-nine".