159261026018 has 4 divisors (see below), whose sum is σ = 238891539030. Its totient is φ = 79630513008.

The previous prime is 159261026009. The next prime is 159261026027. The reversal of 159261026018 is 810620162951.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 810620162951 = 39499 ⋅20522549.

It is an interprime number because it is at equal distance from previous prime (159261026009) and next prime (159261026027).

It can be written as a sum of positive squares in only one way, i.e., 154997327809 + 4263698209 = 393697^2 + 65297^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 39815256503 + ... + 39815256506.

Almost surely, 2^159261026018 is an apocalyptic number.

159261026018 is a deficient number, since it is larger than the sum of its proper divisors (79630513012).

159261026018 is an equidigital number, since it uses as much as digits as its factorization.

159261026018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79630513011.

The product of its (nonzero) digits is 51840, while the sum is 41.

Adding to 159261026018 its reverse (810620162951), we get a palindrome (969881188969).

The spelling of 159261026018 in words is "one hundred fifty-nine billion, two hundred sixty-one million, twenty-six thousand, eighteen".