57681355087 has 2 divisors, whose sum is σ = 57681355088. Its totient is φ = 57681355086.

The previous prime is 57681355073. The next prime is 57681355099. The reversal of 57681355087 is 78055318675.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57681355087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57681350087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28840677543 + 28840677544.

It is an arithmetic number, because the mean of its divisors is an integer number (28840677544).

Almost surely, 2^57681355087 is an apocalyptic number.

57681355087 is a deficient number, since it is larger than the sum of its proper divisors (1).

57681355087 is an equidigital number, since it uses as much as digits as its factorization.

57681355087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056000, while the sum is 55.

The spelling of 57681355087 in words is "fifty-seven billion, six hundred eighty-one million, three hundred fifty-five thousand, eighty-seven".