6667278961237 has 2 divisors, whose sum is σ = 6667278961238. Its totient is φ = 6667278961236.

The previous prime is 6667278961223. The next prime is 6667278961253. The reversal of 6667278961237 is 7321698727666.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3353619401521 + 3313659559716 = 1831289^2 + 1820346^2 .

It is a cyclic number.

It is not a de Polignac number, because 6667278961237 - 2¹⁵ = 6667278928469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6667278961267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3333639480618 + 3333639480619.

It is an arithmetic number, because the mean of its divisors is an integer number (3333639480619).

Almost surely, 2^{6667278961237} is an apocalyptic number.

It is an amenable number.

6667278961237 is a deficient number, since it is larger than the sum of its proper divisors (1).

6667278961237 is an equidigital number, since it uses as much as digits as its factorization.

6667278961237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 384072192, while the sum is 70.

The spelling of 6667278961237 in words is "six trillion, six hundred sixty-seven billion, two hundred seventy-eight million, nine hundred sixty-one thousand, two hundred thirty-seven".