2085349717457 has 2 divisors, whose sum is σ = 2085349717458. Its totient is φ = 2085349717456.

The previous prime is 2085349717441. The next prime is 2085349717499. The reversal of 2085349717457 is 7547179435802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2035940874496 + 49408842961 = 1426864^2 + 222281^2 .

It is a cyclic number.

It is not a de Polignac number, because 2085349717457 - 2⁴ = 2085349717441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2085349717457.

It is not a weakly prime, because it can be changed into another prime (2085349717657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1042674858728 + 1042674858729.

It is an arithmetic number, because the mean of its divisors is an integer number (1042674858729).

Almost surely, 2^{2085349717457} is an apocalyptic number.

It is an amenable number.

2085349717457 is a deficient number, since it is larger than the sum of its proper divisors (1).

2085349717457 is an equidigital number, since it uses as much as digits as its factorization.

2085349717457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 59270400, while the sum is 62.

The spelling of 2085349717457 in words is "two trillion, eighty-five billion, three hundred forty-nine million, seven hundred seventeen thousand, four hundred fifty-seven".