2905094771809 has 2 divisors, whose sum is σ = 2905094771810. Its totient is φ = 2905094771808.

The previous prime is 2905094771791. The next prime is 2905094771863. The reversal of 2905094771809 is 9081774905092.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2894411482209 + 10683289600 = 1701297^2 + 103360^2 .

It is a cyclic number.

It is not a de Polignac number, because 2905094771809 - 2²⁹ = 2904557900897 is a prime.

It is a super-2 number, since 2×2905094771809² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2905094771609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1452547385904 + 1452547385905.

It is an arithmetic number, because the mean of its divisors is an integer number (1452547385905).

Almost surely, 2^{2905094771809} is an apocalyptic number.

It is an amenable number.

2905094771809 is a deficient number, since it is larger than the sum of its proper divisors (1).

2905094771809 is an equidigital number, since it uses as much as digits as its factorization.

2905094771809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11430720, while the sum is 61.

The spelling of 2905094771809 in words is "two trillion, nine hundred five billion, ninety-four million, seven hundred seventy-one thousand, eight hundred nine".