20775011199 has 4 divisors (see below), whose sum is σ = 27700014936. Its totient is φ = 13850007464.

The previous prime is 20775011189. The next prime is 20775011237. The reversal of 20775011199 is 99111057702.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20775011199 - 2⁴ = 20775011183 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20775011199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20775011189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3462501864 + ... + 3462501869.

It is an arithmetic number, because the mean of its divisors is an integer number (6925003734).

Almost surely, 2^20775011199 is an apocalyptic number.

20775011199 is a deficient number, since it is larger than the sum of its proper divisors (6925003737).

20775011199 is an equidigital number, since it uses as much as digits as its factorization.

20775011199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6925003736.

The product of its (nonzero) digits is 39690, while the sum is 42.

The spelling of 20775011199 in words is "twenty billion, seven hundred seventy-five million, eleven thousand, one hundred ninety-nine".