667340808080 has 40 divisors (see below), whose sum is σ = 1551719917944. Its totient is φ = 266910080000.

The previous prime is 667340808041. The next prime is 667340808107. The reversal of 667340808080 is 80808043766.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 450337629184 + 217003178896 = 671072^2 + 465836^2 .

It is a tau number, because it is divible by the number of its divisors (40).

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, 419180 + ... + 1228980.

Almost surely, 2^667340808080 is an apocalyptic number.

It is an amenable number.

667340808080 is an abundant number, since it is smaller than the sum of its proper divisors (884379109864).

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

667340808080 is a wasteful number, since it uses less digits than its factorization.

667340808080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820115 (or 820109 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 50.

The spelling of 667340808080 in words is "six hundred sixty-seven billion, three hundred forty million, eight hundred eight thousand, eighty".