20611362199 has 4 divisors (see below), whose sum is σ = 20611669536. Its totient is φ = 20611054864.

The previous prime is 20611362131. The next prime is 20611362217. The reversal of 20611362199 is 99126311602.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20611362199 is a prime.

It is a super-2 number, since 2×20611362199² (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 (20611368199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5359 + ... + 203104.

It is an arithmetic number, because the mean of its divisors is an integer number (5152917384).

Almost surely, 2^20611362199 is an apocalyptic number.

20611362199 is a deficient number, since it is larger than the sum of its proper divisors (307337).

20611362199 is an equidigital number, since it uses as much as digits as its factorization.

20611362199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307336.

The product of its (nonzero) digits is 34992, while the sum is 40.

The spelling of 20611362199 in words is "twenty billion, six hundred eleven million, three hundred sixty-two thousand, one hundred ninety-nine".