11505399127 has 2 divisors, whose sum is σ = 11505399128. Its totient is φ = 11505399126.

The previous prime is 11505399109. The next prime is 11505399133. The reversal of 11505399127 is 72199350511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11505399127 - 2⁷ = 11505398999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11505399727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5752699563 + 5752699564.

It is an arithmetic number, because the mean of its divisors is an integer number (5752699564).

Almost surely, 2^11505399127 is an apocalyptic number.

11505399127 is a deficient number, since it is larger than the sum of its proper divisors (1).

11505399127 is an equidigital number, since it uses as much as digits as its factorization.

11505399127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 85050, while the sum is 43.

The spelling of 11505399127 in words is "eleven billion, five hundred five million, three hundred ninety-nine thousand, one hundred twenty-seven".