667267155423 has 16 divisors (see below), whose sum is σ = 1078411564800. Its totient is φ = 404404336440.

The previous prime is 667267155413. The next prime is 667267155439. The reversal of 667267155423 is 324551762766.

667267155423 is a `hidden beast` number, since 6 + 6 + 7 + 2 + 67 + 1 + 554 + 23 = 666.

It is not a de Polignac number, because 667267155423 - 2¹⁰ = 667267154399 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 667267155423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667267155413) 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 in 15 ways as a sum of consecutive naturals, for example, 1123345083 + ... + 1123345676.

It is an arithmetic number, because the mean of its divisors is an integer number (67400722800).

Almost surely, 2^667267155423 is an apocalyptic number.

667267155423 is a deficient number, since it is larger than the sum of its proper divisors (411144409377).

667267155423 is a wasteful number, since it uses less digits than its factorization.

667267155423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2246690779 (or 2246690773 counting only the distinct ones).

The product of its digits is 12700800, while the sum is 54.

The spelling of 667267155423 in words is "six hundred sixty-seven billion, two hundred sixty-seven million, one hundred fifty-five thousand, four hundred twenty-three".