57783238769 has 2 divisors, whose sum is σ = 57783238770. Its totient is φ = 57783238768.

The previous prime is 57783238741. The next prime is 57783238831. The reversal of 57783238769 is 96783238775.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56210719744 + 1572519025 = 237088^2 + 39655^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57783238769 is a prime.

It is a super-2 number, since 2×57783238769² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (57783237769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28891619384 + 28891619385.

It is an arithmetic number, because the mean of its divisors is an integer number (28891619385).

Almost surely, 2^57783238769 is an apocalyptic number.

It is an amenable number.

57783238769 is a deficient number, since it is larger than the sum of its proper divisors (1).

57783238769 is an equidigital number, since it uses as much as digits as its factorization.

57783238769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 106686720, while the sum is 65.

The spelling of 57783238769 in words is "fifty-seven billion, seven hundred eighty-three million, two hundred thirty-eight thousand, seven hundred sixty-nine".