85900923191 has 2 divisors, whose sum is σ = 85900923192. Its totient is φ = 85900923190.

The previous prime is 85900923179. The next prime is 85900923239. The reversal of 85900923191 is 19132900958.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85900923191 - 2²⁶ = 85833814327 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85900923991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42950461595 + 42950461596.

It is an arithmetic number, because the mean of its divisors is an integer number (42950461596).

Almost surely, 2^85900923191 is an apocalyptic number.

85900923191 is a deficient number, since it is larger than the sum of its proper divisors (1).

85900923191 is an equidigital number, since it uses as much as digits as its factorization.

85900923191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 174960, while the sum is 47.

The spelling of 85900923191 in words is "eighty-five billion, nine hundred million, nine hundred twenty-three thousand, one hundred ninety-one".