159233968517 has 16 divisors (see below), whose sum is σ = 173629806000. Its totient is φ = 145155981312.

The previous prime is 159233968513. The next prime is 159233968549. The reversal of 159233968517 is 715869332951.

It can be written as a sum of positive squares in 8 ways, for example, as 33638861281 + 125595107236 = 183409^2 + 354394^2 .

It is a cyclic number.

It is not a de Polignac number, because 159233968517 - 2² = 159233968513 is a prime.

It is a super-3 number, since 3×159233968517³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159233968513) 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, 112109 + ... + 575357.

It is an arithmetic number, because the mean of its divisors is an integer number (10851862875).

Almost surely, 2^159233968517 is an apocalyptic number.

It is an amenable number.

159233968517 is a deficient number, since it is larger than the sum of its proper divisors (14395837483).

159233968517 is a wasteful number, since it uses less digits than its factorization.

159233968517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463592.

The product of its digits is 12247200, while the sum is 59.

The spelling of 159233968517 in words is "one hundred fifty-nine billion, two hundred thirty-three million, nine hundred sixty-eight thousand, five hundred seventeen".