20172068225727 has 32 divisors (see below), whose sum is σ = 29848557024000. Its totient is φ = 12014232733440.

The previous prime is 20172068225693. The next prime is 20172068225737. The reversal of 20172068225727 is 72752286027102.

It is a happy number.

It is not a de Polignac number, because 20172068225727 - 2¹² = 20172068221631 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20172068225727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20172068225737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4035849 + ... + 7525437.

It is an arithmetic number, because the mean of its divisors is an integer number (932767407000).

Almost surely, 2^{20172068225727} is an apocalyptic number.

20172068225727 is a deficient number, since it is larger than the sum of its proper divisors (9676488798273).

20172068225727 is a wasteful number, since it uses less digits than its factorization.

20172068225727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3492631.

The product of its (nonzero) digits is 2634240, while the sum is 51.

The spelling of 20172068225727 in words is "twenty trillion, one hundred seventy-two billion, sixty-eight million, two hundred twenty-five thousand, seven hundred twenty-seven".