55091901720206 has 8 divisors (see below), whose sum is σ = 88994610471144. Its totient is φ = 25427031563160.

The previous prime is 55091901720197. The next prime is 55091901720259. The reversal of 55091901720206 is 60202710919055.

55091901720206 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1059459648440 + ... + 1059459648491.

It is an arithmetic number, because the mean of its divisors is an integer number (11124326308893).

Almost surely, 2^{55091901720206} is an apocalyptic number.

55091901720206 is a deficient number, since it is larger than the sum of its proper divisors (33902708750938).

55091901720206 is a wasteful number, since it uses less digits than its factorization.

55091901720206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2118919296946.

The product of its (nonzero) digits is 340200, while the sum is 47.

The spelling of 55091901720206 in words is "fifty-five trillion, ninety-one billion, nine hundred one million, seven hundred twenty thousand, two hundred six".