67320752772 has 384 divisors, whose sum is σ = 205651353600. Its totient is φ = 16665513984.

The previous prime is 67320752753. The next prime is 67320752783. The reversal of 67320752772 is 27725702376.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 255972313 + ... + 255972575.

It is an arithmetic number, because the mean of its divisors is an integer number (535550400).

Almost surely, 2^67320752772 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 67320752772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102825676800).

67320752772 is an abundant number, since it is smaller than the sum of its proper divisors (138330600828).

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

67320752772 is a wasteful number, since it uses less digits than its factorization.

67320752772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515 (or 513 counting only the distinct ones).

The product of its (nonzero) digits is 1728720, while the sum is 48.

The spelling of 67320752772 in words is "sixty-seven billion, three hundred twenty million, seven hundred fifty-two thousand, seven hundred seventy-two".