11975492791 has 2 divisors, whose sum is σ = 11975492792. Its totient is φ = 11975492790.

The previous prime is 11975492701. The next prime is 11975492797. The reversal of 11975492791 is 19729457911.

It is a strong prime.

It is an emirp because it is prime and its reverse (19729457911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11975492791 - 2⁷ = 11975492663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11975492797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5987746395 + 5987746396.

It is an arithmetic number, because the mean of its divisors is an integer number (5987746396).

Almost surely, 2^11975492791 is an apocalyptic number.

11975492791 is a deficient number, since it is larger than the sum of its proper divisors (1).

11975492791 is an equidigital number, since it uses as much as digits as its factorization.

11975492791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1428840, while the sum is 55.

The spelling of 11975492791 in words is "eleven billion, nine hundred seventy-five million, four hundred ninety-two thousand, seven hundred ninety-one".