3085305780857 has 2 divisors, whose sum is σ = 3085305780858. Its totient is φ = 3085305780856.

The previous prime is 3085305780803. The next prime is 3085305780883. The reversal of 3085305780857 is 7580875035803.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2969611241536 + 115694539321 = 1723256^2 + 340139^2 .

It is a cyclic number.

It is not a de Polignac number, because 3085305780857 - 2¹⁴ = 3085305764473 is a prime.

It is a super-2 number, since 2×3085305780857² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3085305780796 and 3085305780805.

It is not a weakly prime, because it can be changed into another prime (3085305780157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1542652890428 + 1542652890429.

It is an arithmetic number, because the mean of its divisors is an integer number (1542652890429).

Almost surely, 2^{3085305780857} is an apocalyptic number.

It is an amenable number.

3085305780857 is a deficient number, since it is larger than the sum of its proper divisors (1).

3085305780857 is an equidigital number, since it uses as much as digits as its factorization.

3085305780857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224000, while the sum is 59.

The spelling of 3085305780857 in words is "three trillion, eighty-five billion, three hundred five million, seven hundred eighty thousand, eight hundred fifty-seven".