2116622312591 has 2 divisors, whose sum is σ = 2116622312592. Its totient is φ = 2116622312590.

The previous prime is 2116622312543. The next prime is 2116622312621. The reversal of 2116622312591 is 1952132266112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2116622312591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2116622312521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1058311156295 + 1058311156296.

It is an arithmetic number, because the mean of its divisors is an integer number (1058311156296).

Almost surely, 2^{2116622312591} is an apocalyptic number.

2116622312591 is a deficient number, since it is larger than the sum of its proper divisors (1).

2116622312591 is an equidigital number, since it uses as much as digits as its factorization.

2116622312591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 41.

The spelling of 2116622312591 in words is "two trillion, one hundred sixteen billion, six hundred twenty-two million, three hundred twelve thousand, five hundred ninety-one".