55318032199 has 4 divisors (see below), whose sum is σ = 56075813536. Its totient is φ = 54560250864.

The previous prime is 55318032197. The next prime is 55318032233. The reversal of 55318032199 is 99123081355.

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 55318032199 - 2¹ = 55318032197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55318032191) 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, 378890559 + ... + 378890704.

It is an arithmetic number, because the mean of its divisors is an integer number (14018953384).

Almost surely, 2^55318032199 is an apocalyptic number.

55318032199 is a deficient number, since it is larger than the sum of its proper divisors (757781337).

55318032199 is an equidigital number, since it uses as much as digits as its factorization.

55318032199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757781336.

The product of its (nonzero) digits is 291600, while the sum is 46.

The spelling of 55318032199 in words is "fifty-five billion, three hundred eighteen million, thirty-two thousand, one hundred ninety-nine".