666666242236 has 24 divisors (see below), whose sum is σ = 1236925254096. Its totient is φ = 313310833920.

The previous prime is 666666242201. The next prime is 666666242261. The reversal of 666666242236 is 632242666666.

666666242236 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 6424030 + ... + 6526981.

It is an arithmetic number, because the mean of its divisors is an integer number (51538552254).

Almost surely, 2^666666242236 is an apocalyptic number.

It is an amenable number.

666666242236 is a deficient number, since it is larger than the sum of its proper divisors (570259011860).

666666242236 is a wasteful number, since it uses less digits than its factorization.

666666242236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12951789 (or 12951787 counting only the distinct ones).

The product of its digits is 26873856, while the sum is 55.

The spelling of 666666242236 in words is "six hundred sixty-six billion, six hundred sixty-six million, two hundred forty-two thousand, two hundred thirty-six".