56181018199 has 2 divisors, whose sum is σ = 56181018200. Its totient is φ = 56181018198.

The previous prime is 56181018161. The next prime is 56181018203. The reversal of 56181018199 is 99181018165.

56181018199 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56181018199 - 2⁷ = 56181018071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56181018109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28090509099 + 28090509100.

It is an arithmetic number, because the mean of its divisors is an integer number (28090509100).

Almost surely, 2^56181018199 is an apocalyptic number.

56181018199 is a deficient number, since it is larger than the sum of its proper divisors (1).

56181018199 is an equidigital number, since it uses as much as digits as its factorization.

56181018199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 49.

The spelling of 56181018199 in words is "fifty-six billion, one hundred eighty-one million, eighteen thousand, one hundred ninety-nine".