159549096891 has 32 divisors (see below), whose sum is σ = 234318714880. Its totient is φ = 96181344000.

The previous prime is 159549096887. The next prime is 159549096893. The reversal of 159549096891 is 198690945951.

It is not a de Polignac number, because 159549096891 - 2² = 159549096887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159549096893) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 489460 + ... + 747441.

It is an arithmetic number, because the mean of its divisors is an integer number (7322459840).

Almost surely, 2^159549096891 is an apocalyptic number.

159549096891 is a deficient number, since it is larger than the sum of its proper divisors (74769617989).

159549096891 is a wasteful number, since it uses less digits than its factorization.

159549096891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237027.

The product of its (nonzero) digits is 31492800, while the sum is 66.

The spelling of 159549096891 in words is "one hundred fifty-nine billion, five hundred forty-nine million, ninety-six thousand, eight hundred ninety-one".