20085804619 has 8 divisors (see below), whose sum is σ = 20960520192. Its totient is φ = 19211207400.

The previous prime is 20085804581. The next prime is 20085804659. The reversal of 20085804619 is 91640858002.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20085804619 - 2⁷ = 20085804491 is a prime.

It is a super-2 number, since 2×20085804619² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20085804659) by changing a digit.

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, 636672 + ... + 667474.

It is an arithmetic number, because the mean of its divisors is an integer number (2620065024).

Almost surely, 2^20085804619 is an apocalyptic number.

20085804619 is a deficient number, since it is larger than the sum of its proper divisors (874715573).

20085804619 is a wasteful number, since it uses less digits than its factorization.

20085804619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59177.

The product of its (nonzero) digits is 138240, while the sum is 43.

The spelling of 20085804619 in words is "twenty billion, eighty-five million, eight hundred four thousand, six hundred nineteen".