4069561057 has 2 divisors, whose sum is σ = 4069561058. Its totient is φ = 4069561056.

The previous prime is 4069561021. The next prime is 4069561079. The reversal of 4069561057 is 7501659604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3556810321 + 512750736 = 59639^2 + 22644^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4069561057 is a prime.

It is a super-2 number, since 2×4069561057² = 33122654393301914498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4069561007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2034780528 + 2034780529.

It is an arithmetic number, because the mean of its divisors is an integer number (2034780529).

Almost surely, 2^4069561057 is an apocalyptic number.

It is an amenable number.

4069561057 is a deficient number, since it is larger than the sum of its proper divisors (1).

4069561057 is an equidigital number, since it uses as much as digits as its factorization.

4069561057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 226800, while the sum is 43.

The square root of 4069561057 is about 63793.1113600834. Note that the first 3 decimals coincide. The cubic root of 4069561057 is about 1596.5499955621.

The spelling of 4069561057 in words is "four billion, sixty-nine million, five hundred sixty-one thousand, fifty-seven".