2291662131971 has 2 divisors, whose sum is σ = 2291662131972. Its totient is φ = 2291662131970.

The previous prime is 2291662131947. The next prime is 2291662131989. The reversal of 2291662131971 is 1791312661922.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2291662131971 is a prime.

It is not a weakly prime, because it can be changed into another prime (2291662131901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1145831065985 + 1145831065986.

It is an arithmetic number, because the mean of its divisors is an integer number (1145831065986).

Almost surely, 2^{2291662131971} is an apocalyptic number.

2291662131971 is a deficient number, since it is larger than the sum of its proper divisors (1).

2291662131971 is an equidigital number, since it uses as much as digits as its factorization.

2291662131971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 50.

The spelling of 2291662131971 in words is "two trillion, two hundred ninety-one billion, six hundred sixty-two million, one hundred thirty-one thousand, nine hundred seventy-one".