200444979819 has 16 divisors (see below), whose sum is σ = 313695104768. Its totient is φ = 111444312672.

The previous prime is 200444979817. The next prime is 200444979857. The reversal of 200444979819 is 918979444002.

It is a happy number.

It is not a de Polignac number, because 200444979819 - 2¹ = 200444979817 is a prime.

It is a super-2 number, since 2×200444979819² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200444979817) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 128985697 + ... + 128987250.

It is an arithmetic number, because the mean of its divisors is an integer number (19605944048).

Almost surely, 2^200444979819 is an apocalyptic number.

200444979819 is a deficient number, since it is larger than the sum of its proper divisors (113250124949).

200444979819 is a wasteful number, since it uses less digits than its factorization.

200444979819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257972994.

The product of its (nonzero) digits is 5225472, while the sum is 57.

The spelling of 200444979819 in words is "two hundred billion, four hundred forty-four million, nine hundred seventy-nine thousand, eight hundred nineteen".