2745128363617 has 2 divisors, whose sum is σ = 2745128363618. Its totient is φ = 2745128363616.

The previous prime is 2745128363609. The next prime is 2745128363693. The reversal of 2745128363617 is 7163638215472.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2129851278801 + 615277084816 = 1459401^2 + 784396^2 .

It is a cyclic number.

It is not a de Polignac number, because 2745128363617 - 2³ = 2745128363609 is a prime.

It is not a weakly prime, because it can be changed into another prime (2745128363717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1372564181808 + 1372564181809.

It is an arithmetic number, because the mean of its divisors is an integer number (1372564181809).

Almost surely, 2^{2745128363617} is an apocalyptic number.

It is an amenable number.

2745128363617 is a deficient number, since it is larger than the sum of its proper divisors (1).

2745128363617 is an equidigital number, since it uses as much as digits as its factorization.

2745128363617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10160640, while the sum is 55.

The spelling of 2745128363617 in words is "two trillion, seven hundred forty-five billion, one hundred twenty-eight million, three hundred sixty-three thousand, six hundred seventeen".