57788731813 has 2 divisors, whose sum is σ = 57788731814. Its totient is φ = 57788731812.

The previous prime is 57788731807. The next prime is 57788731831. The reversal of 57788731813 is 31813788775.

57788731813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (57788731831) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57743128804 + 45603009 = 240298^2 + 6753^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57788731813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57788734813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28894365906 + 28894365907.

It is an arithmetic number, because the mean of its divisors is an integer number (28894365907).

Almost surely, 2^57788731813 is an apocalyptic number.

It is an amenable number.

57788731813 is a deficient number, since it is larger than the sum of its proper divisors (1).

57788731813 is an equidigital number, since it uses as much as digits as its factorization.

57788731813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7902720, while the sum is 58.

The spelling of 57788731813 in words is "fifty-seven billion, seven hundred eighty-eight million, seven hundred thirty-one thousand, eight hundred thirteen".