668280810037 has 2 divisors, whose sum is σ = 668280810038. Its totient is φ = 668280810036.

The previous prime is 668280810023. The next prime is 668280810091. The reversal of 668280810037 is 730018082866.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 650335796356 + 17945013681 = 806434^2 + 133959^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-668280810037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (668280810017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334140405018 + 334140405019.

It is an arithmetic number, because the mean of its divisors is an integer number (334140405019).

Almost surely, 2^668280810037 is an apocalyptic number.

It is an amenable number.

668280810037 is a deficient number, since it is larger than the sum of its proper divisors (1).

668280810037 is an equidigital number, since it uses as much as digits as its factorization.

668280810037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 774144, while the sum is 49.

The spelling of 668280810037 in words is "six hundred sixty-eight billion, two hundred eighty million, eight hundred ten thousand, thirty-seven".