11516404399 has 2 divisors, whose sum is σ = 11516404400. Its totient is φ = 11516404398.

The previous prime is 11516404373. The next prime is 11516404453. The reversal of 11516404399 is 99340461511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11516404399 - 2⁷ = 11516404271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11516404369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5758202199 + 5758202200.

It is an arithmetic number, because the mean of its divisors is an integer number (5758202200).

Almost surely, 2^11516404399 is an apocalyptic number.

11516404399 is a deficient number, since it is larger than the sum of its proper divisors (1).

11516404399 is an equidigital number, since it uses as much as digits as its factorization.

11516404399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 43.

The spelling of 11516404399 in words is "eleven billion, five hundred sixteen million, four hundred four thousand, three hundred ninety-nine".