159240167891 has 16 divisors (see below), whose sum is σ = 183293496000. Its totient is φ = 135513858048.

The previous prime is 159240167851. The next prime is 159240167921. The reversal of 159240167891 is 198761042951.

It is a cyclic number.

It is not a de Polignac number, because 159240167891 - 2¹⁰ = 159240166867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159240167851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2337155 + ... + 2404323.

It is an arithmetic number, because the mean of its divisors is an integer number (11455843500).

Almost surely, 2^159240167891 is an apocalyptic number.

159240167891 is a deficient number, since it is larger than the sum of its proper divisors (24053328109).

159240167891 is a wasteful number, since it uses less digits than its factorization.

159240167891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69598.

The product of its (nonzero) digits is 1088640, while the sum is 53.

The spelling of 159240167891 in words is "one hundred fifty-nine billion, two hundred forty million, one hundred sixty-seven thousand, eight hundred ninety-one".