2891092972091 has 2 divisors, whose sum is σ = 2891092972092. Its totient is φ = 2891092972090.

The previous prime is 2891092972067. The next prime is 2891092972093. The reversal of 2891092972091 is 1902792901982.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2891092972091 is a prime.

Together with 2891092972093, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2891092972091.

It is not a weakly prime, because it can be changed into another prime (2891092972093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1445546486045 + 1445546486046.

It is an arithmetic number, because the mean of its divisors is an integer number (1445546486046).

Almost surely, 2^{2891092972091} is an apocalyptic number.

2891092972091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2891092972091 is an equidigital number, since it uses as much as digits as its factorization.

2891092972091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2939328, while the sum is 59.

The spelling of 2891092972091 in words is "two trillion, eight hundred ninety-one billion, ninety-two million, nine hundred seventy-two thousand, ninety-one".