159691037897 has 8 divisors (see below), whose sum is σ = 162704557440. Its totient is φ = 156702321360.

The previous prime is 159691037867. The next prime is 159691037917. The reversal of 159691037897 is 798730196951.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 159691037897 - 2²⁶ = 159623929033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (159691037827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6187754 + ... + 6213507.

It is an arithmetic number, because the mean of its divisors is an integer number (20338069680).

Almost surely, 2^159691037897 is an apocalyptic number.

It is an amenable number.

159691037897 is a deficient number, since it is larger than the sum of its proper divisors (3013519543).

159691037897 is a wasteful number, since it uses less digits than its factorization.

159691037897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12401503.

The product of its (nonzero) digits is 25719120, while the sum is 65.

The spelling of 159691037897 in words is "one hundred fifty-nine billion, six hundred ninety-one million, thirty-seven thousand, eight hundred ninety-seven".