846660381013 has 2 divisors, whose sum is σ = 846660381014. Its totient is φ = 846660381012.

The previous prime is 846660380989. The next prime is 846660381031. The reversal of 846660381013 is 310183066648.

Together with next prime (846660381031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 477504494289 + 369155886724 = 691017^2 + 607582^2 .

It is a cyclic number.

It is not a de Polignac number, because 846660381013 - 2⁵ = 846660380981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (846660381613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 423330190506 + 423330190507.

It is an arithmetic number, because the mean of its divisors is an integer number (423330190507).

Almost surely, 2^846660381013 is an apocalyptic number.

It is an amenable number.

846660381013 is a deficient number, since it is larger than the sum of its proper divisors (1).

846660381013 is an equidigital number, since it uses as much as digits as its factorization.

846660381013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 497664, while the sum is 46.

The spelling of 846660381013 in words is "eight hundred forty-six billion, six hundred sixty million, three hundred eighty-one thousand, thirteen".