666734740748 has 6 divisors (see below), whose sum is σ = 1166785796316. Its totient is φ = 333367370372.

The previous prime is 666734740697. The next prime is 666734740811. The reversal of 666734740748 is 847047437666.

It is a happy number.

666734740748 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83341842590 + ... + 83341842597.

It is an arithmetic number, because the mean of its divisors is an integer number (194464299386).

Almost surely, 2^666734740748 is an apocalyptic number.

It is an amenable number.

666734740748 is a deficient number, since it is larger than the sum of its proper divisors (500051055568).

666734740748 is a wasteful number, since it uses less digits than its factorization.

666734740748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166683685191 (or 166683685189 counting only the distinct ones).

The product of its (nonzero) digits is 113799168, while the sum is 62.

The spelling of 666734740748 in words is "six hundred sixty-six billion, seven hundred thirty-four million, seven hundred forty thousand, seven hundred forty-eight".