28047768741 has 12 divisors (see below), whose sum is σ = 40968652140. Its totient is φ = 18488416320.

The previous prime is 28047768719. The next prime is 28047768757. The reversal of 28047768741 is 14786774082.

It can be written as a sum of positive squares in 2 ways, for example, as 2316400641 + 25731368100 = 48129^2 + 160410^2 .

It is not a de Polignac number, because 28047768741 - 2⁵ = 28047768709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28047763741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17507170 + ... + 17508771.

It is an arithmetic number, because the mean of its divisors is an integer number (3414054345).

Almost surely, 2^28047768741 is an apocalyptic number.

It is an amenable number.

28047768741 is a deficient number, since it is larger than the sum of its proper divisors (12920883399).

28047768741 is a wasteful number, since it uses less digits than its factorization.

28047768741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35016036 (or 35016033 counting only the distinct ones).

The product of its (nonzero) digits is 4214784, while the sum is 54.

The spelling of 28047768741 in words is "twenty-eight billion, forty-seven million, seven hundred sixty-eight thousand, seven hundred forty-one".