67632744856 has 16 divisors (see below), whose sum is σ = 126824292000. Its totient is φ = 33812933664.

The previous prime is 67632744847. The next prime is 67632744859. The reversal of 67632744856 is 65844723676.

It is a self number, because there is not a number n which added to its sum of digits gives 67632744856.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67632744859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 345280 + ... + 504463.

It is an arithmetic number, because the mean of its divisors is an integer number (7926518250).

Almost surely, 2^67632744856 is an apocalyptic number.

It is an amenable number.

67632744856 is a deficient number, since it is larger than the sum of its proper divisors (59191547144).

67632744856 is a wasteful number, since it uses less digits than its factorization.

67632744856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859698 (or 859694 counting only the distinct ones).

The product of its digits is 40642560, while the sum is 58.

The spelling of 67632744856 in words is "sixty-seven billion, six hundred thirty-two million, seven hundred forty-four thousand, eight hundred fifty-six".