159674518217 has 4 divisors (see below), whose sum is σ = 160931798016. Its totient is φ = 158417238420.

The previous prime is 159674518193. The next prime is 159674518243. The reversal of 159674518217 is 712815476951.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 712815476951 = 169427 ⋅4207213.

It is a cyclic number.

It is not a de Polignac number, because 159674518217 - 2¹⁶ = 159674452681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159674517217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 628639709 + ... + 628639962.

It is an arithmetic number, because the mean of its divisors is an integer number (40232949504).

Almost surely, 2^159674518217 is an apocalyptic number.

It is an amenable number.

159674518217 is a deficient number, since it is larger than the sum of its proper divisors (1257279799).

159674518217 is a wasteful number, since it uses less digits than its factorization.

159674518217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257279798.

The product of its digits is 4233600, while the sum is 56.

The spelling of 159674518217 in words is "one hundred fifty-nine billion, six hundred seventy-four million, five hundred eighteen thousand, two hundred seventeen".