2728377788273 has 4 divisors (see below), whose sum is σ = 2728730254068. Its totient is φ = 2728025322480.

The previous prime is 2728377788237. The next prime is 2728377788287. The reversal of 2728377788273 is 3728877738272.

2728377788273 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 776005951744 + 1952371836529 = 880912^2 + 1397273^2 .

It is a cyclic number.

It is not a de Polignac number, because 2728377788273 - 2⁶ = 2728377788209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2728377788197 and 2728377788206.

It is not an unprimeable number, because it can be changed into a prime (2728377088273) 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, 176221286 + ... + 176236767.

It is an arithmetic number, because the mean of its divisors is an integer number (682182563517).

Almost surely, 2^{2728377788273} is an apocalyptic number.

It is an amenable number.

2728377788273 is a deficient number, since it is larger than the sum of its proper divisors (352465795).

2728377788273 is an equidigital number, since it uses as much as digits as its factorization.

2728377788273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352465794.

The product of its digits is 619573248, while the sum is 71.

The spelling of 2728377788273 in words is "two trillion, seven hundred twenty-eight billion, three hundred seventy-seven million, seven hundred eighty-eight thousand, two hundred seventy-three".