28002775005005 has 4 divisors (see below), whose sum is σ = 33603330006012. Its totient is φ = 22402220004000.

The previous prime is 28002775005001. The next prime is 28002775005011. The reversal of 28002775005005 is 50050057720082.

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 21344279880169 + 6658495124836 = 4619987^2 + 2580406^2 .

It is not a de Polignac number, because 28002775005005 - 2² = 28002775005001 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 (28002775005001) 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, 2800277500496 + ... + 2800277500505.

It is an arithmetic number, because the mean of its divisors is an integer number (8400832501503).

Almost surely, 2^{28002775005005} is an apocalyptic number.

It is an amenable number.

28002775005005 is a deficient number, since it is larger than the sum of its proper divisors (5600555001007).

28002775005005 is an equidigital number, since it uses as much as digits as its factorization.

28002775005005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5600555001006.

The product of its (nonzero) digits is 196000, while the sum is 41.

The spelling of 28002775005005 in words is "twenty-eight trillion, two billion, seven hundred seventy-five million, five thousand, five".