15128817755291 has 2 divisors, whose sum is σ = 15128817755292. Its totient is φ = 15128817755290.

The previous prime is 15128817755251. The next prime is 15128817755323. The reversal of 15128817755291 is 19255771882151.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15128817755291 - 2¹⁴ = 15128817738907 is a prime.

It is a super-2 number, since 2×15128817755291² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15128817755251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7564408877645 + 7564408877646.

It is an arithmetic number, because the mean of its divisors is an integer number (7564408877646).

Almost surely, 2^{15128817755291} is an apocalyptic number.

15128817755291 is a deficient number, since it is larger than the sum of its proper divisors (1).

15128817755291 is an equidigital number, since it uses as much as digits as its factorization.

15128817755291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14112000, while the sum is 62.

The spelling of 15128817755291 in words is "fifteen trillion, one hundred twenty-eight billion, eight hundred seventeen million, seven hundred fifty-five thousand, two hundred ninety-one".