57191140866 has 16 divisors (see below), whose sum is σ = 119355424704. Its totient is φ = 18234856464.

The previous prime is 57191140861. The next prime is 57191140873. The reversal of 57191140866 is 66804119175.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (57191140861) 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, 207214141 + ... + 207214416.

It is an arithmetic number, because the mean of its divisors is an integer number (7459714044).

Almost surely, 2^57191140866 is an apocalyptic number.

57191140866 is an abundant number, since it is smaller than the sum of its proper divisors (62164283838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57191140866 is a wasteful number, since it uses less digits than its factorization.

57191140866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414428585.

The product of its (nonzero) digits is 362880, while the sum is 48.

The spelling of 57191140866 in words is "fifty-seven billion, one hundred ninety-one million, one hundred forty thousand, eight hundred sixty-six".