11404040423 has 2 divisors, whose sum is σ = 11404040424. Its totient is φ = 11404040422.

The previous prime is 11404040393. The next prime is 11404040441. The reversal of 11404040423 is 32404040411.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11404040423 - 2²⁸ = 11135604967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11404042423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5702020211 + 5702020212.

It is an arithmetic number, because the mean of its divisors is an integer number (5702020212).

Almost surely, 2^11404040423 is an apocalyptic number.

11404040423 is a deficient number, since it is larger than the sum of its proper divisors (1).

11404040423 is an equidigital number, since it uses as much as digits as its factorization.

11404040423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 11404040423 its reverse (32404040411), we get a palindrome (43808080834).

The spelling of 11404040423 in words is "eleven billion, four hundred four million, forty thousand, four hundred twenty-three".