2809006447057 has 2 divisors, whose sum is σ = 2809006447058. Its totient is φ = 2809006447056.

The previous prime is 2809006447043. The next prime is 2809006447073. The reversal of 2809006447057 is 7507446009082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2511895330816 + 297111116241 = 1584896^2 + 545079^2 .

It is a cyclic number.

It is not a de Polignac number, because 2809006447057 - 2³⁵ = 2774646708689 is a prime.

It is a super-2 number, since 2×2809006447057² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2809006446995 and 2809006447013.

It is not a weakly prime, because it can be changed into another prime (2809006447157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1404503223528 + 1404503223529.

It is an arithmetic number, because the mean of its divisors is an integer number (1404503223529).

Almost surely, 2^{2809006447057} is an apocalyptic number.

It is an amenable number.

2809006447057 is a deficient number, since it is larger than the sum of its proper divisors (1).

2809006447057 is an equidigital number, since it uses as much as digits as its factorization.

2809006447057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3386880, while the sum is 52.

The spelling of 2809006447057 in words is "two trillion, eight hundred nine billion, six million, four hundred forty-seven thousand, fifty-seven".