4056684791569 has 2 divisors, whose sum is σ = 4056684791570. Its totient is φ = 4056684791568.

The previous prime is 4056684791563. The next prime is 4056684791629. The reversal of 4056684791569 is 9651974866504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4033088145025 + 23596646544 = 2008255^2 + 153612^2 .

It is a cyclic number.

It is not a de Polignac number, because 4056684791569 - 2³ = 4056684791561 is a prime.

It is a super-2 number, since 2×4056684791569² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4056684791498 and 4056684791507.

It is not a weakly prime, because it can be changed into another prime (4056684791561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2028342395784 + 2028342395785.

It is an arithmetic number, because the mean of its divisors is an integer number (2028342395785).

Almost surely, 2^{4056684791569} is an apocalyptic number.

It is an amenable number.

4056684791569 is a deficient number, since it is larger than the sum of its proper divisors (1).

4056684791569 is an equidigital number, since it uses as much as digits as its factorization.

4056684791569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 391910400, while the sum is 70.

The spelling of 4056684791569 in words is "four trillion, fifty-six billion, six hundred eighty-four million, seven hundred ninety-one thousand, five hundred sixty-nine".