20081726018 has 16 divisors (see below), whose sum is σ = 30581378880. Its totient is φ = 9888023376.

The previous prime is 20081725973. The next prime is 20081726033. The reversal of 20081726018 is 81062718002.

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 in 7 ways as a sum of consecutive naturals, for example, 463403 + ... + 504881.

It is an arithmetic number, because the mean of its divisors is an integer number (1911336180).

Almost surely, 2^20081726018 is an apocalyptic number.

20081726018 is a deficient number, since it is larger than the sum of its proper divisors (10499652862).

20081726018 is a wasteful number, since it uses less digits than its factorization.

20081726018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45161.

The product of its (nonzero) digits is 10752, while the sum is 35.

The spelling of 20081726018 in words is "twenty billion, eighty-one million, seven hundred twenty-six thousand, eighteen".