28350251776285 has 4 divisors (see below), whose sum is σ = 34020302131548. Its totient is φ = 22680201421024.

The previous prime is 28350251776277. The next prime is 28350251776291. The reversal of 28350251776285 is 58267715205382.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3530934130084 + 24819317646201 = 1879078^2 + 4981899^2 .

It is a cyclic number.

It is not a de Polignac number, because 28350251776285 - 2³ = 28350251776277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2835025177624 + ... + 2835025177633.

It is an arithmetic number, because the mean of its divisors is an integer number (8505075532887).

Almost surely, 2^{28350251776285} is an apocalyptic number.

It is an amenable number.

28350251776285 is a deficient number, since it is larger than the sum of its proper divisors (5670050355263).

28350251776285 is an equidigital number, since it uses as much as digits as its factorization.

28350251776285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5670050355262.

The product of its (nonzero) digits is 56448000, while the sum is 61.

The spelling of 28350251776285 in words is "twenty-eight trillion, three hundred fifty billion, two hundred fifty-one million, seven hundred seventy-six thousand, two hundred eighty-five".