7057043681 has 2 divisors, whose sum is σ = 7057043682. Its totient is φ = 7057043680.

The previous prime is 7057043659. The next prime is 7057043683. The reversal of 7057043681 is 1863407507.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7015570081 + 41473600 = 83759^2 + 6440^2 .

It is a cyclic number.

It is not a de Polignac number, because 7057043681 - 2²⁶ = 6989934817 is a prime.

It is a super-2 number, since 2×7057043681² = 99603731031084059522, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 7057043683, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (7057043683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3528521840 + 3528521841.

It is an arithmetic number, because the mean of its divisors is an integer number (3528521841).

Almost surely, 2^7057043681 is an apocalyptic number.

It is an amenable number.

7057043681 is a deficient number, since it is larger than the sum of its proper divisors (1).

7057043681 is an equidigital number, since it uses as much as digits as its factorization.

7057043681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 7057043681 is about 84006.2121571970. The cubic root of 7057043681 is about 1918.1133522626.

The spelling of 7057043681 in words is "seven billion, fifty-seven million, forty-three thousand, six hundred eighty-one".