159931834091 has 2 divisors, whose sum is σ = 159931834092. Its totient is φ = 159931834090.

The previous prime is 159931834087. The next prime is 159931834093. The reversal of 159931834091 is 190438139951.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 159931834091 - 2² = 159931834087 is a prime.

It is a super-2 number, since 2×159931834091² (a number of 23 digits) contains 22 as substring.

Together with 159931834093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (159931834093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79965917045 + 79965917046.

It is an arithmetic number, because the mean of its divisors is an integer number (79965917046).

Almost surely, 2^159931834091 is an apocalyptic number.

159931834091 is a deficient number, since it is larger than the sum of its proper divisors (1).

159931834091 is an equidigital number, since it uses as much as digits as its factorization.

159931834091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1049760, while the sum is 53.

The spelling of 159931834091 in words is "one hundred fifty-nine billion, nine hundred thirty-one million, eight hundred thirty-four thousand, ninety-one".