667367121007099 has 2 divisors, whose sum is σ = 667367121007100. Its totient is φ = 667367121007098.

The previous prime is 667367121007079. The next prime is 667367121007109. The reversal of 667367121007099 is 990700121763766.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 667367121007099 - 2¹¹ = 667367121005051 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 667367121007099.

It is not a weakly prime, because it can be changed into another prime (667367121007019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333683560503549 + 333683560503550.

It is an arithmetic number, because the mean of its divisors is an integer number (333683560503550).

Almost surely, 2^{667367121007099} is an apocalyptic number.

667367121007099 is a deficient number, since it is larger than the sum of its proper divisors (1).

667367121007099 is an equidigital number, since it uses as much as digits as its factorization.

667367121007099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36006768, while the sum is 64.

The spelling of 667367121007099 in words is "six hundred sixty-seven trillion, three hundred sixty-seven billion, one hundred twenty-one million, seven thousand, ninety-nine".