20841144718 has 4 divisors (see below), whose sum is σ = 31261717080. Its totient is φ = 10420572358.

The previous prime is 20841144673. The next prime is 20841144763. The reversal of 20841144718 is 81744114802.

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

It is an interprime number because it is at equal distance from previous prime (20841144673) and next prime (20841144763).

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

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, 5210286178 + ... + 5210286181.

It is an arithmetic number, because the mean of its divisors is an integer number (7815429270).

Almost surely, 2^20841144718 is an apocalyptic number.

20841144718 is a deficient number, since it is larger than the sum of its proper divisors (10420572362).

20841144718 is a wasteful number, since it uses less digits than its factorization.

20841144718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10420572361.

The product of its (nonzero) digits is 57344, while the sum is 40.

The spelling of 20841144718 in words is "twenty billion, eight hundred forty-one million, one hundred forty-four thousand, seven hundred eighteen".