667519920280 has 16 divisors (see below), whose sum is σ = 1501919820720. Its totient is φ = 267007968096.

The previous prime is 667519920253. The next prime is 667519920283. The reversal of 667519920280 is 82029915766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667519920283) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 8343998964 + ... + 8343999043.

It is an arithmetic number, because the mean of its divisors is an integer number (93869988795).

Almost surely, 2^667519920280 is an apocalyptic number.

It is an amenable number.

667519920280 is an abundant number, since it is smaller than the sum of its proper divisors (834399900440).

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

667519920280 is a wasteful number, since it uses less digits than its factorization.

667519920280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16687998018 (or 16687998014 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 55.

The spelling of 667519920280 in words is "six hundred sixty-seven billion, five hundred nineteen million, nine hundred twenty thousand, two hundred eighty".