667651460443 has 8 divisors (see below), whose sum is σ = 728382070080. Its totient is φ = 606926687880.

The previous prime is 667651460369. The next prime is 667651460453. The reversal of 667651460443 is 344064156766.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-667651460443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667651460453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1218373 + ... + 1679206.

It is an arithmetic number, because the mean of its divisors is an integer number (91047758760).

Almost surely, 2^667651460443 is an apocalyptic number.

667651460443 is a deficient number, since it is larger than the sum of its proper divisors (60730609637).

667651460443 is a wasteful number, since it uses less digits than its factorization.

667651460443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2918537.

The product of its (nonzero) digits is 8709120, while the sum is 52.

The spelling of 667651460443 in words is "six hundred sixty-seven billion, six hundred fifty-one million, four hundred sixty thousand, four hundred forty-three".