2591779658843 has 2 divisors, whose sum is σ = 2591779658844. Its totient is φ = 2591779658842.

The previous prime is 2591779658837. The next prime is 2591779658917. The reversal of 2591779658843 is 3488569771952.

It is an a-pointer prime, because the next prime (2591779658917) can be obtained adding 2591779658843 to its sum of digits (74).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2591779658843 - 2¹⁸ = 2591779396699 is a prime.

It is not a weakly prime, because it can be changed into another prime (2591779618843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1295889829421 + 1295889829422.

It is an arithmetic number, because the mean of its divisors is an integer number (1295889829422).

Almost surely, 2^{2591779658843} is an apocalyptic number.

2591779658843 is a deficient number, since it is larger than the sum of its proper divisors (1).

2591779658843 is an equidigital number, since it uses as much as digits as its factorization.

2591779658843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 914457600, while the sum is 74.

The spelling of 2591779658843 in words is "two trillion, five hundred ninety-one billion, seven hundred seventy-nine million, six hundred fifty-eight thousand, eight hundred forty-three".