172051685368 has 8 divisors (see below), whose sum is σ = 322596910080. Its totient is φ = 86025842680.

The previous prime is 172051685363. The next prime is 172051685389. The reversal of 172051685368 is 863586150271.

172051685368 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172051685363) by changing a digit.

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 as a sum of consecutive naturals, namely, 10753230328 + ... + 10753230343.

It is an arithmetic number, because the mean of its divisors is an integer number (40324613760).

Almost surely, 2^172051685368 is an apocalyptic number.

It is an amenable number.

172051685368 is a deficient number, since it is larger than the sum of its proper divisors (150545224712).

172051685368 is a wasteful number, since it uses less digits than its factorization.

172051685368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21506460677 (or 21506460673 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 52.

The spelling of 172051685368 in words is "one hundred seventy-two billion, fifty-one million, six hundred eighty-five thousand, three hundred sixty-eight".