666238304496 has 40 divisors (see below), whose sum is σ = 1721623893840. Its totient is φ = 222013851136.

The previous prime is 666238304477. The next prime is 666238304503. The reversal of 666238304496 is 694403832666.

666238304496 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, 1885125 + ... + 2210468.

It is an arithmetic number, because the mean of its divisors is an integer number (43040597346).

Almost surely, 2^666238304496 is an apocalyptic number.

It is an amenable number.

666238304496 is an abundant number, since it is smaller than the sum of its proper divisors (1055385589344).

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

666238304496 is a wasteful number, since it uses less digits than its factorization.

666238304496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4098993 (or 4098987 counting only the distinct ones).

The product of its (nonzero) digits is 26873856, while the sum is 57.

The spelling of 666238304496 in words is "six hundred sixty-six billion, two hundred thirty-eight million, three hundred four thousand, four hundred ninety-six".