67999217472 has 70 divisors (see below), whose sum is σ = 201570998178. Its totient is φ = 22666404096.

The previous prime is 67999217453. The next prime is 67999217483. The reversal of 67999217472 is 27471299976.

67999217472 is a `hidden beast` number, since 6 + 79 + 9 + 92 + 1 + 7 + 472 = 666.

67999217472 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., 61238431296 + 6760786176 = 247464^2 + 82224^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6553383 + ... + 6563750.

Almost surely, 2^67999217472 is an apocalyptic number.

It is an amenable number.

67999217472 is an abundant number, since it is smaller than the sum of its proper divisors (133571780706).

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

67999217472 is a wasteful number, since it uses less digits than its factorization.

67999217472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13117157 (or 13117138 counting only the distinct ones).

The product of its digits is 24004512, while the sum is 63.

The spelling of 67999217472 in words is "sixty-seven billion, nine hundred ninety-nine million, two hundred seventeen thousand, four hundred seventy-two".