20111198257199 has 8 divisors (see below), whose sum is σ = 22984305751680. Its totient is φ = 17238110555736.

The previous prime is 20111198257169. The next prime is 20111198257217. The reversal of 20111198257199 is 99175289111102.

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

It is not a de Polignac number, because 20111198257199 - 2²⁸ = 20110929821743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111198257109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2703029 + ... + 6894110.

It is an arithmetic number, because the mean of its divisors is an integer number (2873038218960).

Almost surely, 2^{20111198257199} is an apocalyptic number.

20111198257199 is a deficient number, since it is larger than the sum of its proper divisors (2873107494481).

20111198257199 is an equidigital number, since it uses as much as digits as its factorization.

20111198257199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9896509.

The product of its (nonzero) digits is 816480, while the sum is 56.

The spelling of 20111198257199 in words is "twenty trillion, one hundred eleven billion, one hundred ninety-eight million, two hundred fifty-seven thousand, one hundred ninety-nine".