667210232879 has 2 divisors, whose sum is σ = 667210232880. Its totient is φ = 667210232878.

The previous prime is 667210232797. The next prime is 667210232911. The reversal of 667210232879 is 978232012766.

667210232879 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-667210232879 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 667210232879.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667210232279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333605116439 + 333605116440.

It is an arithmetic number, because the mean of its divisors is an integer number (333605116440).

Almost surely, 2^667210232879 is an apocalyptic number.

667210232879 is a deficient number, since it is larger than the sum of its proper divisors (1).

667210232879 is an equidigital number, since it uses as much as digits as its factorization.

667210232879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3048192, while the sum is 53.

The spelling of 667210232879 in words is "six hundred sixty-seven billion, two hundred ten million, two hundred thirty-two thousand, eight hundred seventy-nine".