159259781217 has 16 divisors (see below), whose sum is σ = 214468731648. Its totient is φ = 105112204800.

The previous prime is 159259781209. The next prime is 159259781243. The reversal of 159259781217 is 712187952951.

It is not a de Polignac number, because 159259781217 - 2³ = 159259781209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (159259781267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4841608 + ... + 4874390.

It is an arithmetic number, because the mean of its divisors is an integer number (13404295728).

Almost surely, 2^159259781217 is an apocalyptic number.

It is an amenable number.

159259781217 is a deficient number, since it is larger than the sum of its proper divisors (55208950431).

159259781217 is a wasteful number, since it uses less digits than its factorization.

159259781217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48920.

The product of its digits is 3175200, while the sum is 57.

The spelling of 159259781217 in words is "one hundred fifty-nine billion, two hundred fifty-nine million, seven hundred eighty-one thousand, two hundred seventeen".