67680966528 has 576 divisors, whose sum is σ = 239703141600. Its totient is φ = 18623582208.

The previous prime is 67680966517. The next prime is 67680966533. The reversal of 67680966528 is 82566908676.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 170480826 + ... + 170481222.

Almost surely, 2^67680966528 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 67680966528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119851570800).

67680966528 is an abundant number, since it is smaller than the sum of its proper divisors (172022175072).

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

67680966528 is an frugal number, since it uses more digits than its factorization.

67680966528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471 (or 438 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 63.

The spelling of 67680966528 in words is "sixty-seven billion, six hundred eighty million, nine hundred sixty-six thousand, five hundred twenty-eight".