159436121889 has 16 divisors (see below), whose sum is σ = 232188908544. Its totient is φ = 96510526800.

The previous prime is 159436121879. The next prime is 159436121893. The reversal of 159436121889 is 988121634951.

It is a happy number.

It is not a de Polignac number, because 159436121889 - 2⁵ = 159436121857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (159436121849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2908077 + ... + 2962394.

It is an arithmetic number, because the mean of its divisors is an integer number (14511806784).

Almost surely, 2^159436121889 is an apocalyptic number.

It is an amenable number.

159436121889 is a deficient number, since it is larger than the sum of its proper divisors (72752786655).

159436121889 is a wasteful number, since it uses less digits than its factorization.

159436121889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5871308.

The product of its digits is 3732480, while the sum is 57.

The spelling of 159436121889 in words is "one hundred fifty-nine billion, four hundred thirty-six million, one hundred twenty-one thousand, eight hundred eighty-nine".