666733340740 has 48 divisors (see below), whose sum is σ = 1513664913600. Its totient is φ = 245828276352.

The previous prime is 666733340731. The next prime is 666733340753. The reversal of 666733340740 is 47043337666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23696230 + ... + 23724349.

It is an arithmetic number, because the mean of its divisors is an integer number (31534685700).

Almost surely, 2^666733340740 is an apocalyptic number.

It is an amenable number.

666733340740 is an abundant number, since it is smaller than the sum of its proper divisors (846931572860).

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

666733340740 is a wasteful number, since it uses less digits than its factorization.

666733340740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47420644 (or 47420642 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 49.

The spelling of 666733340740 in words is "six hundred sixty-six billion, seven hundred thirty-three million, three hundred forty thousand, seven hundred forty".