28382910366493 has 4 divisors (see below), whose sum is σ = 28382921448700. Its totient is φ = 28382899284288.

The previous prime is 28382910366439. The next prime is 28382910366523. The reversal of 28382910366493 is 39466301928382.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 4832883417924 + 23550026948569 = 2198382^2 + 4852837^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28382910366493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28382910366403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 485371 + ... + 7549927.

It is an arithmetic number, because the mean of its divisors is an integer number (7095730362175).

Almost surely, 2^{28382910366493} is an apocalyptic number.

It is an amenable number.

28382910366493 is a deficient number, since it is larger than the sum of its proper divisors (11082207).

28382910366493 is an equidigital number, since it uses as much as digits as its factorization.

28382910366493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11082206.

The product of its (nonzero) digits is 80621568, while the sum is 64.

The spelling of 28382910366493 in words is "twenty-eight trillion, three hundred eighty-two billion, nine hundred ten million, three hundred sixty-six thousand, four hundred ninety-three".