2723021727065 has 4 divisors (see below), whose sum is σ = 3267626072484. Its totient is φ = 2178417381648.

The previous prime is 2723021727053. The next prime is 2723021727089. The reversal of 2723021727065 is 5607271203272.

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 1098243216841 + 1624778510224 = 1047971^2 + 1274668^2 .

It is a cyclic number.

It is not a de Polignac number, because 2723021727065 - 2⁶ = 2723021727001 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272302172702 + ... + 272302172711.

It is an arithmetic number, because the mean of its divisors is an integer number (816906518121).

Almost surely, 2^{2723021727065} is an apocalyptic number.

It is an amenable number.

2723021727065 is a deficient number, since it is larger than the sum of its proper divisors (544604345419).

2723021727065 is an equidigital number, since it uses as much as digits as its factorization.

2723021727065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544604345418.

The product of its (nonzero) digits is 493920, while the sum is 44.

The spelling of 2723021727065 in words is "two trillion, seven hundred twenty-three billion, twenty-one million, seven hundred twenty-seven thousand, sixty-five".