13244508157 has 2 divisors, whose sum is σ = 13244508158. Its totient is φ = 13244508156.

The previous prime is 13244508143. The next prime is 13244508203. The reversal of 13244508157 is 75180544231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9671935716 + 3572572441 = 98346^2 + 59771^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13244508157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13244508127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6622254078 + 6622254079.

It is an arithmetic number, because the mean of its divisors is an integer number (6622254079).

Almost surely, 2^13244508157 is an apocalyptic number.

It is an amenable number.

13244508157 is a deficient number, since it is larger than the sum of its proper divisors (1).

13244508157 is an equidigital number, since it uses as much as digits as its factorization.

13244508157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 134400, while the sum is 40.

The spelling of 13244508157 in words is "thirteen billion, two hundred forty-four million, five hundred eight thousand, one hundred fifty-seven".