20364444418 has 4 divisors (see below), whose sum is σ = 30546666630. Its totient is φ = 10182222208.

The previous prime is 20364444403. The next prime is 20364444437. The reversal of 20364444418 is 81444446302.

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., 20117734569 + 246709849 = 141837^2 + 15707^2 .

It is a super-2 number, since 2×20364444418² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5091111103 + ... + 5091111106.

Almost surely, 2^20364444418 is an apocalyptic number.

20364444418 is a deficient number, since it is larger than the sum of its proper divisors (10182222212).

20364444418 is a wasteful number, since it uses less digits than its factorization.

20364444418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10182222211.

The product of its (nonzero) digits is 294912, while the sum is 40.

The spelling of 20364444418 in words is "twenty billion, three hundred sixty-four million, four hundred forty-four thousand, four hundred eighteen".