199044401773 has 4 divisors (see below), whose sum is σ = 227479316320. Its totient is φ = 170609487228.

The previous prime is 199044401771. The next prime is 199044401783. The reversal of 199044401773 is 377104440991.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 199044401773 - 2¹ = 199044401771 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 (199044401771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14217457263 + ... + 14217457276.

It is an arithmetic number, because the mean of its divisors is an integer number (56869829080).

Almost surely, 2^199044401773 is an apocalyptic number.

It is an amenable number.

199044401773 is a deficient number, since it is larger than the sum of its proper divisors (28434914547).

199044401773 is an equidigital number, since it uses as much as digits as its factorization.

199044401773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28434914546.

The product of its (nonzero) digits is 762048, while the sum is 49.

The spelling of 199044401773 in words is "one hundred ninety-nine billion, forty-four million, four hundred one thousand, seven hundred seventy-three".