667438377158 has 16 divisors (see below), whose sum is σ = 1144429407744. Its totient is φ = 285982685640.

The previous prime is 667438377149. The next prime is 667438377167. The reversal of 667438377158 is 851773834766.

It is an interprime number because it is at equal distance from previous prime (667438377149) and next prime (667438377167).

It is a junction number, because it is equal to n+sod(n) for n = 667438377094 and 667438377103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5127860 + ... + 5256407.

It is an arithmetic number, because the mean of its divisors is an integer number (71526837984).

Almost surely, 2^667438377158 is an apocalyptic number.

667438377158 is a deficient number, since it is larger than the sum of its proper divisors (476991030586).

667438377158 is a wasteful number, since it uses less digits than its factorization.

667438377158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10388867.

The product of its digits is 142248960, while the sum is 65.

The spelling of 667438377158 in words is "six hundred sixty-seven billion, four hundred thirty-eight million, three hundred seventy-seven thousand, one hundred fifty-eight".