667212608519 has 2 divisors, whose sum is σ = 667212608520. Its totient is φ = 667212608518.

The previous prime is 667212608479. The next prime is 667212608521. The reversal of 667212608519 is 915806212766.

667212608519 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 not a de Polignac number, because 667212608519 - 2³² = 662917641223 is a prime.

It is a super-2 number, since 2×667212608519² (a number of 24 digits) contains 22 as substring.

Together with 667212608521, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667212608719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333606304259 + 333606304260.

It is an arithmetic number, because the mean of its divisors is an integer number (333606304260).

Almost surely, 2^667212608519 is an apocalyptic number.

667212608519 is a deficient number, since it is larger than the sum of its proper divisors (1).

667212608519 is an equidigital number, since it uses as much as digits as its factorization.

667212608519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The spelling of 667212608519 in words is "six hundred sixty-seven billion, two hundred twelve million, six hundred eight thousand, five hundred nineteen".