2745128363693 has 2 divisors, whose sum is σ = 2745128363694. Its totient is φ = 2745128363692.

The previous prime is 2745128363617. The next prime is 2745128363717. The reversal of 2745128363693 is 3963638215472.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1718833747849 + 1026294615844 = 1311043^2 + 1013062^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2745128363693 is a prime.

It is a super-4 number, since 4×2745128363693⁴ (a number of 51 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2745128366693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1372564181846 + 1372564181847.

It is an arithmetic number, because the mean of its divisors is an integer number (1372564181847).

Almost surely, 2^{2745128363693} is an apocalyptic number.

It is an amenable number.

2745128363693 is a deficient number, since it is larger than the sum of its proper divisors (1).

2745128363693 is an equidigital number, since it uses as much as digits as its factorization.

2745128363693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39191040, while the sum is 59.

The spelling of 2745128363693 in words is "two trillion, seven hundred forty-five billion, one hundred twenty-eight million, three hundred sixty-three thousand, six hundred ninety-three".