67686166484 has 6 divisors (see below), whose sum is σ = 118450791354. Its totient is φ = 33843083240.

The previous prime is 67686166481. The next prime is 67686166511. The reversal of 67686166484 is 48466168676.

It can be written as a sum of positive squares in only one way, i.e., 46387682884 + 21298483600 = 215378^2 + 145940^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67686166481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8460770807 + ... + 8460770814.

It is an arithmetic number, because the mean of its divisors is an integer number (19741798559).

Almost surely, 2^67686166484 is an apocalyptic number.

It is an amenable number.

67686166484 is a deficient number, since it is larger than the sum of its proper divisors (50764624870).

67686166484 is a wasteful number, since it uses less digits than its factorization.

67686166484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16921541625 (or 16921541623 counting only the distinct ones).

The product of its digits is 55738368, while the sum is 62.

The spelling of 67686166484 in words is "sixty-seven billion, six hundred eighty-six million, one hundred sixty-six thousand, four hundred eighty-four".