67121033056 has 96 divisors (see below), whose sum is σ = 164959683840. Its totient is φ = 26118028800.

The previous prime is 67121033041. The next prime is 67121033087. The reversal of 67121033056 is 65033012176.

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 15 ways as a sum of consecutive naturals, for example, 1981510 + ... + 2015098.

It is an arithmetic number, because the mean of its divisors is an integer number (1718330040).

Almost surely, 2^67121033056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67121033056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82479841920).

67121033056 is an abundant number, since it is smaller than the sum of its proper divisors (97838650784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67121033056 is a wasteful number, since it uses less digits than its factorization.

67121033056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34428 (or 34420 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 34.

The spelling of 67121033056 in words is "sixty-seven billion, one hundred twenty-one million, thirty-three thousand, fifty-six".