67745452172 has 12 divisors (see below), whose sum is σ = 118582512216. Its totient is φ = 33864734400.

The previous prime is 67745452171. The next prime is 67745452193. The reversal of 67745452172 is 27125454776.

67745452172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 67745452172.

It is not an unprimeable number, because it can be changed into a prime (67745452171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1978829 + ... + 2012772.

It is an arithmetic number, because the mean of its divisors is an integer number (9881876018).

Almost surely, 2^67745452172 is an apocalyptic number.

It is an amenable number.

67745452172 is a deficient number, since it is larger than the sum of its proper divisors (50837060044).

67745452172 is a wasteful number, since it uses less digits than its factorization.

67745452172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3995848 (or 3995846 counting only the distinct ones).

The product of its digits is 3292800, while the sum is 50.

The spelling of 67745452172 in words is "sixty-seven billion, seven hundred forty-five million, four hundred fifty-two thousand, one hundred seventy-two".