15513663349 has 2 divisors, whose sum is σ = 15513663350. Its totient is φ = 15513663348.

The previous prime is 15513663311. The next prime is 15513663377. The reversal of 15513663349 is 94336631551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15322726225 + 190937124 = 123785^2 + 13818^2 .

It is a cyclic number.

It is not a de Polignac number, because 15513663349 - 2¹¹ = 15513661301 is a prime.

It is a super-2 number, since 2×15513663349² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15513663299 and 15513663308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15513661349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7756831674 + 7756831675.

It is an arithmetic number, because the mean of its divisors is an integer number (7756831675).

Almost surely, 2^15513663349 is an apocalyptic number.

It is an amenable number.

15513663349 is a deficient number, since it is larger than the sum of its proper divisors (1).

15513663349 is an equidigital number, since it uses as much as digits as its factorization.

15513663349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 874800, while the sum is 46.

The spelling of 15513663349 in words is "fifteen billion, five hundred thirteen million, six hundred sixty-three thousand, three hundred forty-nine".