20081997822 has 8 divisors (see below), whose sum is σ = 40163995656. Its totient is φ = 6693999272.

The previous prime is 20081997791. The next prime is 20081997827. The reversal of 20081997822 is 22879918002.

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

20081997822 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20081997827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1673499813 + ... + 1673499824.

It is an arithmetic number, because the mean of its divisors is an integer number (5020499457).

Almost surely, 2^20081997822 is an apocalyptic number.

20081997822 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20081997822 is a wasteful number, since it uses less digits than its factorization.

20081997822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3346999642.

The product of its (nonzero) digits is 290304, while the sum is 48.

The spelling of 20081997822 in words is "twenty billion, eighty-one million, nine hundred ninety-seven thousand, eight hundred twenty-two".