667511737131641 has 8 divisors (see below), whose sum is σ = 702653842658400. Its totient is φ = 632370622488480.

The previous prime is 667511737131571. The next prime is 667511737131667. The reversal of 667511737131641 is 146131737115766.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 667511737131641 - 2³⁸ = 667236859224697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667511737131341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246337931 + ... + 249032928.

It is an arithmetic number, because the mean of its divisors is an integer number (87831730332300).

Almost surely, 2^{667511737131641} is an apocalyptic number.

It is an amenable number.

667511737131641 is a deficient number, since it is larger than the sum of its proper divisors (35142105526759).

667511737131641 is a wasteful number, since it uses less digits than its factorization.

667511737131641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495441799.

The product of its digits is 13335840, while the sum is 59.

The spelling of 667511737131641 in words is "six hundred sixty-seven trillion, five hundred eleven billion, seven hundred thirty-seven million, one hundred thirty-one thousand, six hundred forty-one".