2728551381005 has 4 divisors (see below), whose sum is σ = 3274261657212. Its totient is φ = 2182841104800.

The previous prime is 2728551380981. The next prime is 2728551381013. The reversal of 2728551381005 is 5001831558272.

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 382256556361 + 2346294824644 = 618269^2 + 1531762^2 .

It is not a de Polignac number, because 2728551381005 - 2¹⁸ = 2728551118861 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, 272855138096 + ... + 272855138105.

It is an arithmetic number, because the mean of its divisors is an integer number (818565414303).

Almost surely, 2^{2728551381005} is an apocalyptic number.

It is an amenable number.

2728551381005 is a deficient number, since it is larger than the sum of its proper divisors (545710276207).

2728551381005 is an equidigital number, since it uses as much as digits as its factorization.

2728551381005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545710276206.

The product of its (nonzero) digits is 672000, while the sum is 47.

The spelling of 2728551381005 in words is "two trillion, seven hundred twenty-eight billion, five hundred fifty-one million, three hundred eighty-one thousand, five".