11040340391 has 2 divisors, whose sum is σ = 11040340392. Its totient is φ = 11040340390.

The previous prime is 11040340361. The next prime is 11040340433. The reversal of 11040340391 is 19304304011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11040340391 - 2¹⁴ = 11040324007 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11040340391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11040340361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5520170195 + 5520170196.

It is an arithmetic number, because the mean of its divisors is an integer number (5520170196).

Almost surely, 2^11040340391 is an apocalyptic number.

11040340391 is a deficient number, since it is larger than the sum of its proper divisors (1).

11040340391 is an equidigital number, since it uses as much as digits as its factorization.

11040340391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The spelling of 11040340391 in words is "eleven billion, forty million, three hundred forty thousand, three hundred ninety-one".