10891742591 has 2 divisors, whose sum is σ = 10891742592. Its totient is φ = 10891742590.

The previous prime is 10891742579. The next prime is 10891742629. The reversal of 10891742591 is 19524719801.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10891742591 - 2⁶ = 10891742527 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10891747591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5445871295 + 5445871296.

It is an arithmetic number, because the mean of its divisors is an integer number (5445871296).

Almost surely, 2^10891742591 is an apocalyptic number.

10891742591 is a deficient number, since it is larger than the sum of its proper divisors (1).

10891742591 is an equidigital number, since it uses as much as digits as its factorization.

10891742591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 47.

The spelling of 10891742591 in words is "ten billion, eight hundred ninety-one million, seven hundred forty-two thousand, five hundred ninety-one".