667366666272 has 96 divisors (see below), whose sum is σ = 1978395874560. Its totient is φ = 218808725760.

The previous prime is 667366666261. The next prime is 667366666273. The reversal of 667366666272 is 272666663766.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (667366666273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6278568 + ... + 6383975.

It is an arithmetic number, because the mean of its divisors is an integer number (20608290360).

Almost surely, 2^667366666272 is an apocalyptic number.

It is an amenable number.

667366666272 is an abundant number, since it is smaller than the sum of its proper divisors (1311029208288).

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

667366666272 is a wasteful number, since it uses less digits than its factorization.

667366666272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12662623 (or 12662609 counting only the distinct ones).

The product of its digits is 164602368, while the sum is 63.

The spelling of 667366666272 in words is "six hundred sixty-seven billion, three hundred sixty-six million, six hundred sixty-six thousand, two hundred seventy-two".