67116561677 has 8 divisors (see below), whose sum is σ = 73219949472. Its totient is φ = 61013487600.

The previous prime is 67116561643. The next prime is 67116561679. The reversal of 67116561677 is 77616561176.

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 a de Polignac number, because none of the positive numbers 2^k-67116561677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67116561679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 743102 + ... + 828512.

It is an arithmetic number, because the mean of its divisors is an integer number (9152493684).

Almost surely, 2^67116561677 is an apocalyptic number.

It is an amenable number.

67116561677 is a deficient number, since it is larger than the sum of its proper divisors (6103387795).

67116561677 is a wasteful number, since it uses less digits than its factorization.

67116561677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156859.

The product of its digits is 2222640, while the sum is 53.

The spelling of 67116561677 in words is "sixty-seven billion, one hundred sixteen million, five hundred sixty-one thousand, six hundred seventy-seven".