15974139769243 has 2 divisors, whose sum is σ = 15974139769244. Its totient is φ = 15974139769242.

The previous prime is 15974139769207. The next prime is 15974139769253. The reversal of 15974139769243 is 34296793147951.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15974139769243 - 2²⁵ = 15974106214811 is a prime.

It is not a weakly prime, because it can be changed into another prime (15974139769253) 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, 7987069884621 + 7987069884622.

It is an arithmetic number, because the mean of its divisors is an integer number (7987069884622).

Almost surely, 2^{15974139769243} is an apocalyptic number.

15974139769243 is a deficient number, since it is larger than the sum of its proper divisors (1).

15974139769243 is an equidigital number, since it uses as much as digits as its factorization.

15974139769243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 308629440, while the sum is 70.

The spelling of 15974139769243 in words is "fifteen trillion, nine hundred seventy-four billion, one hundred thirty-nine million, seven hundred sixty-nine thousand, two hundred forty-three".