57181198887 has 10 divisors (see below), whose sum is σ = 85418828088. Its totient is φ = 38120799204.

The previous prime is 57181198871. The next prime is 57181198931. The reversal of 57181198887 is 78889118175.

It is not a de Polignac number, because 57181198887 - 2⁴ = 57181198871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57181196887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 352970283 + ... + 352970444.

Almost surely, 2^57181198887 is an apocalyptic number.

57181198887 is a deficient number, since it is larger than the sum of its proper divisors (28237629201).

57181198887 is an equidigital number, since it uses as much as digits as its factorization.

57181198887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705940739 (or 705940730 counting only the distinct ones).

The product of its digits is 9031680, while the sum is 63.

The spelling of 57181198887 in words is "fifty-seven billion, one hundred eighty-one million, one hundred ninety-eight thousand, eight hundred eighty-seven".