2591244198391 has 2 divisors, whose sum is σ = 2591244198392. Its totient is φ = 2591244198390.

The previous prime is 2591244198317. The next prime is 2591244198401. The reversal of 2591244198391 is 1938914421952.

2591244198391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2591244198391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2591244198311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1295622099195 + 1295622099196.

It is an arithmetic number, because the mean of its divisors is an integer number (1295622099196).

Almost surely, 2^{2591244198391} is an apocalyptic number.

2591244198391 is a deficient number, since it is larger than the sum of its proper divisors (1).

2591244198391 is an equidigital number, since it uses as much as digits as its factorization.

2591244198391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5598720, while the sum is 58.

The spelling of 2591244198391 in words is "two trillion, five hundred ninety-one billion, two hundred forty-four million, one hundred ninety-eight thousand, three hundred ninety-one".