159162697681 has 16 divisors (see below), whose sum is σ = 172675921600. Its totient is φ = 145831347648.

The previous prime is 159162697667. The next prime is 159162697709. The reversal of 159162697681 is 186796261951.

It is a cyclic number.

It is not a de Polignac number, because 159162697681 - 2²³ = 159154309073 is a prime.

It is a super-3 number, since 3×159162697681³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (159162697481) 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, 16541890 + ... + 16551508.

It is an arithmetic number, because the mean of its divisors is an integer number (10792245100).

Almost surely, 2^159162697681 is an apocalyptic number.

It is an amenable number.

159162697681 is a deficient number, since it is larger than the sum of its proper divisors (13513223919).

159162697681 is a wasteful number, since it uses less digits than its factorization.

159162697681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18928.

The product of its digits is 9797760, while the sum is 61.

The spelling of 159162697681 in words is "one hundred fifty-nine billion, one hundred sixty-two million, six hundred ninety-seven thousand, six hundred eighty-one".