667376531266656 has 48 divisors (see below), whose sum is σ = 1789137083833344. Its totient is φ = 217725676865664.

The previous prime is 667376531266573. The next prime is 667376531266663. The reversal of 667376531266656 is 656662135673766.

It is a tau number, because it is divible by the number of its divisors (48).

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, 73955728120 + ... + 73955737143.

It is an arithmetic number, because the mean of its divisors is an integer number (37273689246528).

Almost surely, 2^{667376531266656} is an apocalyptic number.

It is an amenable number.

667376531266656 is an abundant number, since it is smaller than the sum of its proper divisors (1121760552566688).

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

667376531266656 is a wasteful number, since it uses less digits than its factorization.

667376531266656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147911465323 (or 147911465315 counting only the distinct ones).

The product of its digits is 6172588800, while the sum is 75.

The spelling of 667376531266656 in words is "six hundred sixty-seven trillion, three hundred seventy-six billion, five hundred thirty-one million, two hundred sixty-six thousand, six hundred fifty-six".