20334858218 has 4 divisors (see below), whose sum is σ = 30502287330. Its totient is φ = 10167429108.

The previous prime is 20334858169. The next prime is 20334858221. The reversal of 20334858218 is 81285843302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81285843302 = 2 ⋅40642921651.

It can be written as a sum of positive squares in only one way, i.e., 16359177409 + 3975680809 = 127903^2 + 63053^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5083714553 + ... + 5083714556.

Almost surely, 2^20334858218 is an apocalyptic number.

20334858218 is a deficient number, since it is larger than the sum of its proper divisors (10167429112).

20334858218 is a wasteful number, since it uses less digits than its factorization.

20334858218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10167429111.

The product of its (nonzero) digits is 368640, while the sum is 44.

The spelling of 20334858218 in words is "twenty billion, three hundred thirty-four million, eight hundred fifty-eight thousand, two hundred eighteen".