159194129891 has 2 divisors, whose sum is σ = 159194129892. Its totient is φ = 159194129890.

The previous prime is 159194129879. The next prime is 159194129933. The reversal of 159194129891 is 198921491951.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 159194129891 - 2¹⁰ = 159194128867 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 159194129891.

It is not a weakly prime, because it can be changed into another prime (159194129851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79597064945 + 79597064946.

It is an arithmetic number, because the mean of its divisors is an integer number (79597064946).

Almost surely, 2^159194129891 is an apocalyptic number.

159194129891 is a deficient number, since it is larger than the sum of its proper divisors (1).

159194129891 is an equidigital number, since it uses as much as digits as its factorization.

159194129891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2099520, while the sum is 59.

The spelling of 159194129891 in words is "one hundred fifty-nine billion, one hundred ninety-four million, one hundred twenty-nine thousand, eight hundred ninety-one".