866475550512057 has 32 divisors (see below), whose sum is σ = 1226091987331200. Its totient is φ = 542412308480000.

The previous prime is 866475550512043. The next prime is 866475550512059. The reversal of 866475550512057 is 750215055574668.

It is a cyclic number.

It is not a de Polignac number, because 866475550512057 - 2¹⁵ = 866475550479289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (866475550512059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 259227682 + ... + 262548932.

It is an arithmetic number, because the mean of its divisors is an integer number (38315374604100).

Almost surely, 2^{866475550512057} is an apocalyptic number.

It is an amenable number.

866475550512057 is a deficient number, since it is larger than the sum of its proper divisors (359616436819143).

866475550512057 is a wasteful number, since it uses less digits than its factorization.

866475550512057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3333113.

The product of its (nonzero) digits is 352800000, while the sum is 66.

The spelling of 866475550512057 in words is "eight hundred sixty-six trillion, four hundred seventy-five billion, five hundred fifty million, five hundred twelve thousand, fifty-seven".