12831445666 has 48 divisors (see below), whose sum is σ = 21871632960. Its totient is φ = 5632461120.

The previous prime is 12831445651. The next prime is 12831445667. The reversal of 12831445666 is 66654413821.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (12831445667) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1386936 + ... + 1396156.

It is an arithmetic number, because the mean of its divisors is an integer number (455659020).

Almost surely, 2^12831445666 is an apocalyptic number.

12831445666 is a deficient number, since it is larger than the sum of its proper divisors (9040187294).

12831445666 is a wasteful number, since it uses less digits than its factorization.

12831445666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9451 (or 9438 counting only the distinct ones).

The product of its digits is 829440, while the sum is 46.

The spelling of 12831445666 in words is "twelve billion, eight hundred thirty-one million, four hundred forty-five thousand, six hundred sixty-six".