667667532126 has 16 divisors (see below), whose sum is σ = 1526097216384. Its totient is φ = 190762152024.

The previous prime is 667667532089. The next prime is 667667532157. The reversal of 667667532126 is 621235766766.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7948422960 + ... + 7948423043.

It is an arithmetic number, because the mean of its divisors is an integer number (95381076024).

Almost surely, 2^667667532126 is an apocalyptic number.

667667532126 is an abundant number, since it is smaller than the sum of its proper divisors (858429684258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

667667532126 is a wasteful number, since it uses less digits than its factorization.

667667532126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15896846015.

The product of its digits is 22861440, while the sum is 57.

The spelling of 667667532126 in words is "six hundred sixty-seven billion, six hundred sixty-seven million, five hundred thirty-two thousand, one hundred twenty-six".