2723723146621 has 2 divisors, whose sum is σ = 2723723146622. Its totient is φ = 2723723146620.

The previous prime is 2723723146619. The next prime is 2723723146673. The reversal of 2723723146621 is 1266413273272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2063503520100 + 660219626521 = 1436490^2 + 812539^2 .

It is a cyclic number.

It is not a de Polignac number, because 2723723146621 - 2¹ = 2723723146619 is a prime.

Together with 2723723146619, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2723723146681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1361861573310 + 1361861573311.

It is an arithmetic number, because the mean of its divisors is an integer number (1361861573311).

Almost surely, 2^{2723723146621} is an apocalyptic number.

It is an amenable number.

2723723146621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2723723146621 is an equidigital number, since it uses as much as digits as its factorization.

2723723146621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 46.

The spelling of 2723723146621 in words is "two trillion, seven hundred twenty-three billion, seven hundred twenty-three million, one hundred forty-six thousand, six hundred twenty-one".