57089991766 has 16 divisors (see below), whose sum is σ = 85897746000. Its totient is φ = 28457448448.

The previous prime is 57089991757. The next prime is 57089991769. The reversal of 57089991766 is 66719998075.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57089991769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4546725 + ... + 4559263.

It is an arithmetic number, because the mean of its divisors is an integer number (5368609125).

Almost surely, 2^57089991766 is an apocalyptic number.

57089991766 is a deficient number, since it is larger than the sum of its proper divisors (28807754234).

57089991766 is a wasteful number, since it uses less digits than its factorization.

57089991766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19343.

The product of its (nonzero) digits is 51438240, while the sum is 67.

The spelling of 57089991766 in words is "fifty-seven billion, eighty-nine million, nine hundred ninety-one thousand, seven hundred sixty-six".