57861776887 has 2 divisors, whose sum is σ = 57861776888. Its totient is φ = 57861776886.

The previous prime is 57861776881. The next prime is 57861777013. The reversal of 57861776887 is 78867716875.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57861776887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57861776881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28930888443 + 28930888444.

It is an arithmetic number, because the mean of its divisors is an integer number (28930888444).

Almost surely, 2^57861776887 is an apocalyptic number.

57861776887 is a deficient number, since it is larger than the sum of its proper divisors (1).

57861776887 is an equidigital number, since it uses as much as digits as its factorization.

57861776887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 221276160, while the sum is 70.

The spelling of 57861776887 in words is "fifty-seven billion, eight hundred sixty-one million, seven hundred seventy-six thousand, eight hundred eighty-seven".