667437374407 has 2 divisors, whose sum is σ = 667437374408. Its totient is φ = 667437374406.

The previous prime is 667437374399. The next prime is 667437374437. The reversal of 667437374407 is 704473734766.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 667437374407 - 2³ = 667437374399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667437374437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333718687203 + 333718687204.

It is an arithmetic number, because the mean of its divisors is an integer number (333718687204).

Almost surely, 2^667437374407 is an apocalyptic number.

667437374407 is a deficient number, since it is larger than the sum of its proper divisors (1).

667437374407 is an equidigital number, since it uses as much as digits as its factorization.

667437374407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49787136, while the sum is 58.

The spelling of 667437374407 in words is "six hundred sixty-seven billion, four hundred thirty-seven million, three hundred seventy-four thousand, four hundred seven".