1745342213257 has 2 divisors, whose sum is σ = 1745342213258. Its totient is φ = 1745342213256.

The previous prime is 1745342213161. The next prime is 1745342213281. The reversal of 1745342213257 is 7523122435471.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1744734541456 + 607671801 = 1320884^2 + 24651^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1745342213257 is a prime.

It is not a weakly prime, because it can be changed into another prime (1745342213287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 872671106628 + 872671106629.

It is an arithmetic number, because the mean of its divisors is an integer number (872671106629).

Almost surely, 2^{1745342213257} is an apocalyptic number.

It is an amenable number.

1745342213257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1745342213257 is an equidigital number, since it uses as much as digits as its factorization.

1745342213257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1411200, while the sum is 46.

The spelling of 1745342213257 in words is "one trillion, seven hundred forty-five billion, three hundred forty-two million, two hundred thirteen thousand, two hundred fifty-seven".