159218447852258 has 4 divisors (see below), whose sum is σ = 238827671778390. Its totient is φ = 79609223926128.

The previous prime is 159218447852239. The next prime is 159218447852281. The reversal of 159218447852258 is 852258744812951.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 156694140169009 + 2524307683249 = 12517753^2 + 1588807^2 .

It is a junction number, because it is equal to n+sod(n) for n = 159218447852191 and 159218447852200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39804611963063 + ... + 39804611963066.

Almost surely, 2^{159218447852258} is an apocalyptic number.

159218447852258 is a deficient number, since it is larger than the sum of its proper divisors (79609223926132).

159218447852258 is an equidigital number, since it uses as much as digits as its factorization.

159218447852258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79609223926131.

The product of its digits is 516096000, while the sum is 71.

The spelling of 159218447852258 in words is "one hundred fifty-nine trillion, two hundred eighteen billion, four hundred forty-seven million, eight hundred fifty-two thousand, two hundred fifty-eight".