67040700666667 has 64 divisors (see below), whose sum is σ = 87663955083264. Its totient is φ = 49752508538880.

The previous prime is 67040700666617. The next prime is 67040700666671. The reversal of 67040700666667 is 76666600704076.

It is a happy number.

It is not a de Polignac number, because 67040700666667 - 2⁴³ = 58244607644459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (67040700666607) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 835118643 + ... + 835198915.

It is an arithmetic number, because the mean of its divisors is an integer number (1369749298176).

Almost surely, 2^{67040700666667} is an apocalyptic number.

67040700666667 is a deficient number, since it is larger than the sum of its proper divisors (20623254416597).

67040700666667 is a wasteful number, since it uses less digits than its factorization.

67040700666667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82148.

The product of its (nonzero) digits is 64012032, while the sum is 61.

The spelling of 67040700666667 in words is "sixty-seven trillion, forty billion, seven hundred million, six hundred sixty-six thousand, six hundred sixty-seven".