667660544283 has 4 divisors (see below), whose sum is σ = 890214059048. Its totient is φ = 445107029520.

The previous prime is 667660544267. The next prime is 667660544347. The reversal of 667660544283 is 382445066766.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 667660544283 - 2⁴ = 667660544267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667660544233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111276757378 + ... + 111276757383.

It is an arithmetic number, because the mean of its divisors is an integer number (222553514762).

Almost surely, 2^667660544283 is an apocalyptic number.

667660544283 is a deficient number, since it is larger than the sum of its proper divisors (222553514765).

667660544283 is a wasteful number, since it uses less digits than its factorization.

667660544283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222553514764.

The product of its (nonzero) digits is 34836480, while the sum is 57.

The spelling of 667660544283 in words is "six hundred sixty-seven billion, six hundred sixty million, five hundred forty-four thousand, two hundred eighty-three".