2196917435591 has 2 divisors, whose sum is σ = 2196917435592. Its totient is φ = 2196917435590.

The previous prime is 2196917435519. The next prime is 2196917435651. The reversal of 2196917435591 is 1955347196912.

Together with previous prime (2196917435519) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2196917435591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2196917435891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1098458717795 + 1098458717796.

It is an arithmetic number, because the mean of its divisors is an integer number (1098458717796).

Almost surely, 2^{2196917435591} is an apocalyptic number.

2196917435591 is a deficient number, since it is larger than the sum of its proper divisors (1).

2196917435591 is an equidigital number, since it uses as much as digits as its factorization.

2196917435591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18370800, while the sum is 62.

The spelling of 2196917435591 in words is "two trillion, one hundred ninety-six billion, nine hundred seventeen million, four hundred thirty-five thousand, five hundred ninety-one".