6666736703387 has 2 divisors, whose sum is σ = 6666736703388. Its totient is φ = 6666736703386.

The previous prime is 6666736703383. The next prime is 6666736703449. The reversal of 6666736703387 is 7833076376666.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6666736703387 - 2² = 6666736703383 is a prime.

It is not a weakly prime, because it can be changed into another prime (6666736703383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3333368351693 + 3333368351694.

It is an arithmetic number, because the mean of its divisors is an integer number (3333368351694).

Almost surely, 2^{6666736703387} is an apocalyptic number.

6666736703387 is a deficient number, since it is larger than the sum of its proper divisors (1).

6666736703387 is an equidigital number, since it uses as much as digits as its factorization.

6666736703387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576108288, while the sum is 68.

The spelling of 6666736703387 in words is "six trillion, six hundred sixty-six billion, seven hundred thirty-six million, seven hundred three thousand, three hundred eighty-seven".