159472487917 has 8 divisors (see below), whose sum is σ = 166026154616. Its totient is φ = 153036905472.

The previous prime is 159472487891. The next prime is 159472487927. The reversal of 159472487917 is 719784274951.

It can be written as a sum of positive squares in 4 ways, for example, as 14635918441 + 144836569476 = 120979^2 + 380574^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-159472487917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159472487927) 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, 29518308 + ... + 29523709.

It is an arithmetic number, because the mean of its divisors is an integer number (20753269327).

Almost surely, 2^159472487917 is an apocalyptic number.

It is an amenable number.

159472487917 is a deficient number, since it is larger than the sum of its proper divisors (6553666699).

159472487917 is an equidigital number, since it uses as much as digits as its factorization.

159472487917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59042127.

The product of its digits is 35562240, while the sum is 64.

The spelling of 159472487917 in words is "one hundred fifty-nine billion, four hundred seventy-two million, four hundred eighty-seven thousand, nine hundred seventeen".