15513242369 has 2 divisors, whose sum is σ = 15513242370. Its totient is φ = 15513242368.

The previous prime is 15513242357. The next prime is 15513242383. The reversal of 15513242369 is 96324231551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9458535025 + 6054707344 = 97255^2 + 77812^2 .

It is an emirp because it is prime and its reverse (96324231551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15513242369 - 2²⁰ = 15512193793 is a prime.

It is a super-2 number, since 2×15513242369² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15513242869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7756621184 + 7756621185.

It is an arithmetic number, because the mean of its divisors is an integer number (7756621185).

Almost surely, 2^15513242369 is an apocalyptic number.

It is an amenable number.

15513242369 is a deficient number, since it is larger than the sum of its proper divisors (1).

15513242369 is an equidigital number, since it uses as much as digits as its factorization.

15513242369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 194400, while the sum is 41.

The spelling of 15513242369 in words is "fifteen billion, five hundred thirteen million, two hundred forty-two thousand, three hundred sixty-nine".