28081207850203 has 4 divisors (see below), whose sum is σ = 28840159413760. Its totient is φ = 27322256286648.

The previous prime is 28081207850173. The next prime is 28081207850207. The reversal of 28081207850203 is 30205870218082.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28081207850203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28081207850207) 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, 379475781723 + ... + 379475781796.

It is an arithmetic number, because the mean of its divisors is an integer number (7210039853440).

Almost surely, 2^{28081207850203} is an apocalyptic number.

28081207850203 is a deficient number, since it is larger than the sum of its proper divisors (758951563557).

28081207850203 is an equidigital number, since it uses as much as digits as its factorization.

28081207850203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758951563556.

The product of its (nonzero) digits is 430080, while the sum is 46.

The spelling of 28081207850203 in words is "twenty-eight trillion, eighty-one billion, two hundred seven million, eight hundred fifty thousand, two hundred three".