200128344221903 has 4 divisors (see below), whose sum is σ = 200128878903240. Its totient is φ = 200127809540568.

The previous prime is 200128344221891. The next prime is 200128344221929. The reversal of 200128344221903 is 309122443821002.

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 200128344221903 - 2³⁴ = 200111164352719 is a prime.

It is a super-2 number, since 2×200128344221903² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200128344221503) 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 3 ways as a sum of consecutive naturals, for example, 266778833 + ... + 267527946.

It is an arithmetic number, because the mean of its divisors is an integer number (50032219725810).

Almost surely, 2^{200128344221903} is an apocalyptic number.

200128344221903 is a deficient number, since it is larger than the sum of its proper divisors (534681337).

200128344221903 is an equidigital number, since it uses as much as digits as its factorization.

200128344221903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534681336.

The product of its (nonzero) digits is 165888, while the sum is 41.

The spelling of 200128344221903 in words is "two hundred trillion, one hundred twenty-eight billion, three hundred forty-four million, two hundred twenty-one thousand, nine hundred three".