20853291198 has 32 divisors (see below), whose sum is σ = 43908537600. Its totient is φ = 6584219136.

The previous prime is 20853291197. The next prime is 20853291211. The reversal of 20853291198 is 89119235802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20853291197) 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 15 ways as a sum of consecutive naturals, for example, 1087518 + ... + 1106526.

It is an arithmetic number, because the mean of its divisors is an integer number (1372141800).

Almost surely, 2^20853291198 is an apocalyptic number.

20853291198 is an abundant number, since it is smaller than the sum of its proper divisors (23055246402).

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

20853291198 is a wasteful number, since it uses less digits than its factorization.

20853291198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28656.

The product of its (nonzero) digits is 311040, while the sum is 48.

The spelling of 20853291198 in words is "twenty billion, eight hundred fifty-three million, two hundred ninety-one thousand, one hundred ninety-eight".