57771028009 has 2 divisors, whose sum is σ = 57771028010. Its totient is φ = 57771028008.

The previous prime is 57771027989. The next prime is 57771028027. The reversal of 57771028009 is 90082017775.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53892229609 + 3878798400 = 232147^2 + 62280^2 .

It is a cyclic number.

It is not a de Polignac number, because 57771028009 - 2²³ = 57762639401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57771028009.

It is not a weakly prime, because it can be changed into another prime (57771028099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28885514004 + 28885514005.

It is an arithmetic number, because the mean of its divisors is an integer number (28885514005).

Almost surely, 2^57771028009 is an apocalyptic number.

It is an amenable number.

57771028009 is a deficient number, since it is larger than the sum of its proper divisors (1).

57771028009 is an equidigital number, since it uses as much as digits as its factorization.

57771028009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 246960, while the sum is 46.

The spelling of 57771028009 in words is "fifty-seven billion, seven hundred seventy-one million, twenty-eight thousand, nine".