57864158861 has 2 divisors, whose sum is σ = 57864158862. Its totient is φ = 57864158860.

The previous prime is 57864158857. The next prime is 57864158879. The reversal of 57864158861 is 16885146875.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35144625961 + 22719532900 = 187469^2 + 150730^2 .

It is a cyclic number.

It is not a de Polignac number, because 57864158861 - 2² = 57864158857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57864158861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57864158831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28932079430 + 28932079431.

It is an arithmetic number, because the mean of its divisors is an integer number (28932079431).

Almost surely, 2^57864158861 is an apocalyptic number.

It is an amenable number.

57864158861 is a deficient number, since it is larger than the sum of its proper divisors (1).

57864158861 is an equidigital number, since it uses as much as digits as its factorization.

57864158861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12902400, while the sum is 59.

The spelling of 57864158861 in words is "fifty-seven billion, eight hundred sixty-four million, one hundred fifty-eight thousand, eight hundred sixty-one".