667407039913 has 2 divisors, whose sum is σ = 667407039914. Its totient is φ = 667407039912.

The previous prime is 667407039907. The next prime is 667407040007. The reversal of 667407039913 is 319930704766.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 375625571689 + 291781468224 = 612883^2 + 540168^2 .

It is a cyclic number.

It is not a de Polignac number, because 667407039913 - 2⁹ = 667407039401 is a prime.

It is not a weakly prime, because it can be changed into another prime (667407019913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333703519956 + 333703519957.

It is an arithmetic number, because the mean of its divisors is an integer number (333703519957).

Almost surely, 2^667407039913 is an apocalyptic number.

It is an amenable number.

667407039913 is a deficient number, since it is larger than the sum of its proper divisors (1).

667407039913 is an equidigital number, since it uses as much as digits as its factorization.

667407039913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5143824, while the sum is 55.

The spelling of 667407039913 in words is "six hundred sixty-seven billion, four hundred seven million, thirty-nine thousand, nine hundred thirteen".