666707040403 has 2 divisors, whose sum is σ = 666707040404. Its totient is φ = 666707040402.

The previous prime is 666707040367. The next prime is 666707040469. The reversal of 666707040403 is 304040707666.

666707040403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 666707040403 - 2⁹ = 666707039891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 666707040403.

It is not a weakly prime, because it can be changed into another prime (666707040203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333353520201 + 333353520202.

It is an arithmetic number, because the mean of its divisors is an integer number (333353520202).

Almost surely, 2^666707040403 is an apocalyptic number.

666707040403 is a deficient number, since it is larger than the sum of its proper divisors (1).

666707040403 is an equidigital number, since it uses as much as digits as its factorization.

666707040403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 43.

The spelling of 666707040403 in words is "six hundred sixty-six billion, seven hundred seven million, forty thousand, four hundred three".