159036878891 has 36 divisors (see below), whose sum is σ = 186113270664. Its totient is φ = 135862710720.

The previous prime is 159036878887. The next prime is 159036878899. The reversal of 159036878891 is 198878630951.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is not a de Polignac number, because 159036878891 - 2² = 159036878887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159036878899) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 247335416 + ... + 247336058.

It is an arithmetic number, because the mean of its divisors is an integer number (5169813074).

Almost surely, 2^159036878891 is an apocalyptic number.

159036878891 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

159036878891 is a deficient number, since it is larger than the sum of its proper divisors (27076391773).

159036878891 is an frugal number, since it uses more digits than its factorization.

159036878891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1353 (or 671 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 65.

The spelling of 159036878891 in words is "one hundred fifty-nine billion, thirty-six million, eight hundred seventy-eight thousand, eight hundred ninety-one".