667747516721341 has 4 divisors (see below), whose sum is σ = 763140019110112. Its totient is φ = 572355014332572.

The previous prime is 667747516721291. The next prime is 667747516721393. The reversal of 667747516721341 is 143127615747766.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 667747516721341 - 2¹¹ = 667747516719293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667741516721341) 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, 47696251194375 + ... + 47696251194388.

It is an arithmetic number, because the mean of its divisors is an integer number (190785004777528).

Almost surely, 2^{667747516721341} is an apocalyptic number.

It is an amenable number.

667747516721341 is a deficient number, since it is larger than the sum of its proper divisors (95392502388771).

667747516721341 is an equidigital number, since it uses as much as digits as its factorization.

667747516721341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95392502388770.

The product of its digits is 248935680, while the sum is 67.

The spelling of 667747516721341 in words is "six hundred sixty-seven trillion, seven hundred forty-seven billion, five hundred sixteen million, seven hundred twenty-one thousand, three hundred forty-one".