12665433942 has 80 divisors (see below), whose sum is σ = 34342181280. Its totient is φ = 3405825792.

The previous prime is 12665433931. The next prime is 12665433961. The reversal of 12665433942 is 24933456621.

12665433942 is a `hidden beast` number, since 1 + 2 + 66 + 543 + 3 + 9 + 42 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 309217 + ... + 347772.

It is an arithmetic number, because the mean of its divisors is an integer number (429277266).

Almost surely, 2^12665433942 is an apocalyptic number.

12665433942 is an abundant number, since it is smaller than the sum of its proper divisors (21676747338).

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

12665433942 is a wasteful number, since it uses less digits than its factorization.

12665433942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657027 (or 657018 counting only the distinct ones).

The product of its digits is 933120, while the sum is 45.

The spelling of 12665433942 in words is "twelve billion, six hundred sixty-five million, four hundred thirty-three thousand, nine hundred forty-two".