66120306407 has 2 divisors, whose sum is σ = 66120306408. Its totient is φ = 66120306406.

The previous prime is 66120306397. The next prime is 66120306463. The reversal of 66120306407 is 70460302166.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66120306407 - 2⁸ = 66120306151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66120306467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33060153203 + 33060153204.

It is an arithmetic number, because the mean of its divisors is an integer number (33060153204).

Almost surely, 2^66120306407 is an apocalyptic number.

66120306407 is a deficient number, since it is larger than the sum of its proper divisors (1).

66120306407 is an equidigital number, since it uses as much as digits as its factorization.

66120306407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 35.

The spelling of 66120306407 in words is "sixty-six billion, one hundred twenty million, three hundred six thousand, four hundred seven".