168693440272 has 40 divisors (see below), whose sum is σ = 373605034176. Its totient is φ = 72283725696.

The previous prime is 168693440263. The next prime is 168693440297. The reversal of 168693440272 is 272044396861.

168693440272 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 475923 + ... + 750925.

Almost surely, 2^168693440272 is an apocalyptic number.

It is an amenable number.

168693440272 is an abundant number, since it is smaller than the sum of its proper divisors (204911593904).

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

168693440272 is a wasteful number, since it uses less digits than its factorization.

168693440272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280495 (or 280489 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 52.

The spelling of 168693440272 in words is "one hundred sixty-eight billion, six hundred ninety-three million, four hundred forty thousand, two hundred seventy-two".