67656842836 has 12 divisors (see below), whose sum is σ = 129163063680. Its totient is φ = 30753110360.

The previous prime is 67656842801. The next prime is 67656842843. The reversal of 67656842836 is 63824865676.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 768827716 + ... + 768827803.

It is an arithmetic number, because the mean of its divisors is an integer number (10763588640).

Almost surely, 2^67656842836 is an apocalyptic number.

It is an amenable number.

67656842836 is a deficient number, since it is larger than the sum of its proper divisors (61506220844).

67656842836 is a wasteful number, since it uses less digits than its factorization.

67656842836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1537655534 (or 1537655532 counting only the distinct ones).

The product of its digits is 69672960, while the sum is 61.

The spelling of 67656842836 in words is "sixty-seven billion, six hundred fifty-six million, eight hundred forty-two thousand, eight hundred thirty-six".