667755011062631 has 8 divisors (see below), whose sum is σ = 669312649245600. Its totient is φ = 666198566019360.

The previous prime is 667755011062619. The next prime is 667755011062639. The reversal of 667755011062631 is 136260110557766.

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 667755011062631 - 2⁴² = 663356964551527 is a prime.

It is a super-2 number, since 2×667755011062631² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667755011062639) 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, 297164291 + ... + 299402948.

It is an arithmetic number, because the mean of its divisors is an integer number (83664081155700).

Almost surely, 2^{667755011062631} is an apocalyptic number.

667755011062631 is a deficient number, since it is larger than the sum of its proper divisors (1557638182969).

667755011062631 is a wasteful number, since it uses less digits than its factorization.

667755011062631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596569849.

The product of its (nonzero) digits is 9525600, while the sum is 56.

The spelling of 667755011062631 in words is "six hundred sixty-seven trillion, seven hundred fifty-five billion, eleven million, sixty-two thousand, six hundred thirty-one".