28231753666203 has 6 divisors (see below), whose sum is σ = 40779199740084. Its totient is φ = 18821169110796.

The previous prime is 28231753666187. The next prime is 28231753666223. The reversal of 28231753666203 is 30266635713282.

It is not a de Polignac number, because 28231753666203 - 2⁴ = 28231753666187 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28231753666203.

It is not an unprimeable number, because it can be changed into a prime (28231753666223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1568430759225 + ... + 1568430759242.

It is an arithmetic number, because the mean of its divisors is an integer number (6796533290014).

Almost surely, 2^{28231753666203} is an apocalyptic number.

28231753666203 is a deficient number, since it is larger than the sum of its proper divisors (12547446073881).

28231753666203 is a wasteful number, since it uses less digits than its factorization.

28231753666203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3136861518473 (or 3136861518470 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 54.

The spelling of 28231753666203 in words is "twenty-eight trillion, two hundred thirty-one billion, seven hundred fifty-three million, six hundred sixty-six thousand, two hundred three".