57381356587 has 2 divisors, whose sum is σ = 57381356588. Its totient is φ = 57381356586.

The previous prime is 57381356551. The next prime is 57381356629. The reversal of 57381356587 is 78565318375.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57381356587 is a prime.

It is not a weakly prime, because it can be changed into another prime (57381356507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28690678293 + 28690678294.

It is an arithmetic number, because the mean of its divisors is an integer number (28690678294).

Almost surely, 2^57381356587 is an apocalyptic number.

57381356587 is a deficient number, since it is larger than the sum of its proper divisors (1).

57381356587 is an equidigital number, since it uses as much as digits as its factorization.

57381356587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21168000, while the sum is 58.

The spelling of 57381356587 in words is "fifty-seven billion, three hundred eighty-one million, three hundred fifty-six thousand, five hundred eighty-seven".