20833550018 has 8 divisors (see below), whose sum is σ = 31251802512. Its totient is φ = 10416282516.

The previous prime is 20833549973. The next prime is 20833550039. The reversal of 20833550018 is 81005533802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20833550018.

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 in 3 ways as a sum of consecutive naturals, for example, 190880 + ... + 279467.

It is an arithmetic number, because the mean of its divisors is an integer number (3906475314).

Almost surely, 2^20833550018 is an apocalyptic number.

20833550018 is a deficient number, since it is larger than the sum of its proper divisors (10418252494).

20833550018 is a wasteful number, since it uses less digits than its factorization.

20833550018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492496.

The product of its (nonzero) digits is 28800, while the sum is 35.

The spelling of 20833550018 in words is "twenty billion, eight hundred thirty-three million, five hundred fifty thousand, eighteen".