200644878433 has 2 divisors, whose sum is σ = 200644878434. Its totient is φ = 200644878432.

The previous prime is 200644878431. The next prime is 200644878457. The reversal of 200644878433 is 334878446002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199910034769 + 734843664 = 447113^2 + 27108^2 .

It is a cyclic number.

It is not a de Polignac number, because 200644878433 - 2¹ = 200644878431 is a prime.

Together with 200644878431, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (200644878431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100322439216 + 100322439217.

It is an arithmetic number, because the mean of its divisors is an integer number (100322439217).

Almost surely, 2^200644878433 is an apocalyptic number.

It is an amenable number.

200644878433 is a deficient number, since it is larger than the sum of its proper divisors (1).

200644878433 is an equidigital number, since it uses as much as digits as its factorization.

200644878433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3096576, while the sum is 49.

The spelling of 200644878433 in words is "two hundred billion, six hundred forty-four million, eight hundred seventy-eight thousand, four hundred thirty-three".