67329891872 has 36 divisors (see below), whose sum is σ = 134840734686. Its totient is φ = 33094298880.

The previous prime is 67329891851. The next prime is 67329891949. The reversal of 67329891872 is 27819892376.

67329891872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 42253269136 + 25076622736 = 205556^2 + 158356^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 190829 + ... + 413612.

Almost surely, 2^67329891872 is an apocalyptic number.

It is an amenable number.

67329891872 is an abundant number, since it is smaller than the sum of its proper divisors (67510842814).

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

67329891872 is an equidigital number, since it uses as much as digits as its factorization.

67329891872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604569 (or 604502 counting only the distinct ones).

The product of its digits is 18289152, while the sum is 62.

The spelling of 67329891872 in words is "sixty-seven billion, three hundred twenty-nine million, eight hundred ninety-one thousand, eight hundred seventy-two".