15216074139397 has 2 divisors, whose sum is σ = 15216074139398. Its totient is φ = 15216074139396.

The previous prime is 15216074139391. The next prime is 15216074139443. The reversal of 15216074139397 is 79393147061251.

It is a happy number.

15216074139397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8763488581761 + 6452585557636 = 2960319^2 + 2540194^2 .

It is a cyclic number.

It is not a de Polignac number, because 15216074139397 - 2¹¹ = 15216074137349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15216074139391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7608037069698 + 7608037069699.

It is an arithmetic number, because the mean of its divisors is an integer number (7608037069699).

Almost surely, 2^{15216074139397} is an apocalyptic number.

It is an amenable number.

15216074139397 is a deficient number, since it is larger than the sum of its proper divisors (1).

15216074139397 is an equidigital number, since it uses as much as digits as its factorization.

15216074139397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8573040, while the sum is 58.

The spelling of 15216074139397 in words is "fifteen trillion, two hundred sixteen billion, seventy-four million, one hundred thirty-nine thousand, three hundred ninety-seven".