66585112894 has 16 divisors (see below), whose sum is σ = 105225799680. Its totient is φ = 31512893400.

The previous prime is 66585112889. The next prime is 66585112927. The reversal of 66585112894 is 49821158566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 717444 + ... + 804919.

It is an arithmetic number, because the mean of its divisors is an integer number (6576612480).

Almost surely, 2^66585112894 is an apocalyptic number.

66585112894 is a deficient number, since it is larger than the sum of its proper divisors (38640686786).

66585112894 is a wasteful number, since it uses less digits than its factorization.

66585112894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523535.

The product of its digits is 4147200, while the sum is 55.

The spelling of 66585112894 in words is "sixty-six billion, five hundred eighty-five million, one hundred twelve thousand, eight hundred ninety-four".