159993000091 has 2 divisors, whose sum is σ = 159993000092. Its totient is φ = 159993000090.

The previous prime is 159993000019. The next prime is 159993000107. The reversal of 159993000091 is 190000399951.

Together with previous prime (159993000019) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 159993000091 - 2²⁹ = 159456129179 is a prime.

It is not a weakly prime, because it can be changed into another prime (159993000491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79996500045 + 79996500046.

It is an arithmetic number, because the mean of its divisors is an integer number (79996500046).

Almost surely, 2^159993000091 is an apocalyptic number.

159993000091 is a deficient number, since it is larger than the sum of its proper divisors (1).

159993000091 is an equidigital number, since it uses as much as digits as its factorization.

159993000091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 98415, while the sum is 46.

The spelling of 159993000091 in words is "one hundred fifty-nine billion, nine hundred ninety-three million, ninety-one", and thus it is an aban number.