20198059823 has 8 divisors (see below), whose sum is σ = 20821779600. Its totient is φ = 19583719488.

The previous prime is 20198059813. The next prime is 20198059829. The reversal of 20198059823 is 32895089102.

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 20198059823 - 2³⁴ = 3018190639 is a prime.

It is a super-2 number, since 2×20198059823² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20198059829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2340488 + ... + 2349101.

It is an arithmetic number, because the mean of its divisors is an integer number (2602722450).

Almost surely, 2^20198059823 is an apocalyptic number.

20198059823 is a deficient number, since it is larger than the sum of its proper divisors (623719777).

20198059823 is an equidigital number, since it uses as much as digits as its factorization.

20198059823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4689721.

The product of its (nonzero) digits is 311040, while the sum is 47.

The spelling of 20198059823 in words is "twenty billion, one hundred ninety-eight million, fifty-nine thousand, eight hundred twenty-three".