666593087112 has 64 divisors (see below), whose sum is σ = 1854728769600. Its totient is φ = 221827939200.

The previous prime is 666593087107. The next prime is 666593087117. The reversal of 666593087112 is 211780395666.

It is an interprime number because it is at equal distance from previous prime (666593087107) and next prime (666593087117).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (666593087117) 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 15 ways as a sum of consecutive naturals, for example, 2437638 + ... + 2697269.

It is an arithmetic number, because the mean of its divisors is an integer number (28980137025).

Almost surely, 2^666593087112 is an apocalyptic number.

It is an amenable number.

666593087112 is an abundant number, since it is smaller than the sum of its proper divisors (1188135682488).

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

666593087112 is a wasteful number, since it uses less digits than its factorization.

666593087112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5135523 (or 5135513 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 666593087112 in words is "six hundred sixty-six billion, five hundred ninety-three million, eighty-seven thousand, one hundred twelve".