867493913133641 has 2 divisors, whose sum is σ = 867493913133642. Its totient is φ = 867493913133640.

The previous prime is 867493913133637. The next prime is 867493913133709. The reversal of 867493913133641 is 146331319394768.

It is an a-pointer prime, because the next prime (867493913133709) can be obtained adding 867493913133641 to its sum of digits (68).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 620728772396041 + 246765140737600 = 24914429^2 + 15708760^2 .

It is a cyclic number.

It is not a de Polignac number, because 867493913133641 - 2² = 867493913133637 is a prime.

It is not a weakly prime, because it can be changed into another prime (867493913133611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433746956566820 + 433746956566821.

It is an arithmetic number, because the mean of its divisors is an integer number (433746956566821).

Almost surely, 2^{867493913133641} is an apocalyptic number.

It is an amenable number.

867493913133641 is a deficient number, since it is larger than the sum of its proper divisors (1).

867493913133641 is an equidigital number, since it uses as much as digits as its factorization.

867493913133641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211631616, while the sum is 68.

The spelling of 867493913133641 in words is "eight hundred sixty-seven trillion, four hundred ninety-three billion, nine hundred thirteen million, one hundred thirty-three thousand, six hundred forty-one".