15216074137349 has 2 divisors, whose sum is σ = 15216074137350. Its totient is φ = 15216074137348.

The previous prime is 15216074137309. The next prime is 15216074137361. The reversal of 15216074137349 is 94373147061251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13854348512449 + 1361725624900 = 3722143^2 + 1166930^2 .

It is a cyclic number.

It is not a de Polignac number, because 15216074137349 - 2¹⁶ = 15216074071813 is a prime.

It is a super-2 number, since 2×15216074137349² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 15216074137349.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15216074137309) 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, 7608037068674 + 7608037068675.

It is an arithmetic number, because the mean of its divisors is an integer number (7608037068675).

Almost surely, 2^{15216074137349} is an apocalyptic number.

It is an amenable number.

15216074137349 is a deficient number, since it is larger than the sum of its proper divisors (1).

15216074137349 is an equidigital number, since it uses as much as digits as its factorization.

15216074137349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3810240, while the sum is 53.

The spelling of 15216074137349 in words is "fifteen trillion, two hundred sixteen billion, seventy-four million, one hundred thirty-seven thousand, three hundred forty-nine".