4043255861 has 2 divisors, whose sum is σ = 4043255862. Its totient is φ = 4043255860.

The previous prime is 4043255857. The next prime is 4043255903. The reversal of 4043255861 is 1685523404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3532043761 + 511212100 = 59431^2 + 22610^2 .

It is a cyclic number.

It is not a de Polignac number, because 4043255861 - 2² = 4043255857 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4043255851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2021627930 + 2021627931.

It is an arithmetic number, because the mean of its divisors is an integer number (2021627931).

Almost surely, 2^4043255861 is an apocalyptic number.

It is an amenable number.

4043255861 is a deficient number, since it is larger than the sum of its proper divisors (1).

4043255861 is an equidigital number, since it uses as much as digits as its factorization.

4043255861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 115200, while the sum is 38.

The square root of 4043255861 is about 63586.6012694498. The cubic root of 4043255861 is about 1593.1025823126.

The spelling of 4043255861 in words is "four billion, forty-three million, two hundred fifty-five thousand, eight hundred sixty-one".