2781093427201 has 4 divisors (see below), whose sum is σ = 2781656748612. Its totient is φ = 2780530105792.

The previous prime is 2781093427163. The next prime is 2781093427207. The reversal of 2781093427201 is 1027243901872.

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 805730640625 + 1975362786576 = 897625^2 + 1405476^2 .

It is a cyclic number.

It is not a de Polignac number, because 2781093427201 - 2⁹ = 2781093426689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2781093427207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 281653300 + ... + 281663173.

It is an arithmetic number, because the mean of its divisors is an integer number (695414187153).

Almost surely, 2^{2781093427201} is an apocalyptic number.

It is an amenable number.

2781093427201 is a deficient number, since it is larger than the sum of its proper divisors (563321411).

2781093427201 is an equidigital number, since it uses as much as digits as its factorization.

2781093427201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563321410.

The product of its (nonzero) digits is 338688, while the sum is 46.

The spelling of 2781093427201 in words is "two trillion, seven hundred eighty-one billion, ninety-three million, four hundred twenty-seven thousand, two hundred one".