11905193087 has 2 divisors, whose sum is σ = 11905193088. Its totient is φ = 11905193086.

The previous prime is 11905193081. The next prime is 11905193117. The reversal of 11905193087 is 78039150911.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11905193087 - 2²⁴ = 11888415871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11905193081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5952596543 + 5952596544.

It is an arithmetic number, because the mean of its divisors is an integer number (5952596544).

Almost surely, 2^11905193087 is an apocalyptic number.

11905193087 is a deficient number, since it is larger than the sum of its proper divisors (1).

11905193087 is an equidigital number, since it uses as much as digits as its factorization.

11905193087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 44.

The spelling of 11905193087 in words is "eleven billion, nine hundred five million, one hundred ninety-three thousand, eighty-seven".