100172204369717 has 2 divisors, whose sum is σ = 100172204369718. Its totient is φ = 100172204369716.

The previous prime is 100172204369701. The next prime is 100172204369777. The reversal of 100172204369717 is 717963402271001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55753191841636 + 44419012528081 = 7466806^2 + 6664759^2 .

It is a cyclic number.

It is not a de Polignac number, because 100172204369717 - 2⁴ = 100172204369701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100172204369777) 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 as a sum of consecutive naturals, namely, 50086102184858 + 50086102184859.

It is an arithmetic number, because the mean of its divisors is an integer number (50086102184859).

Almost surely, 2^{100172204369717} is an apocalyptic number.

It is an amenable number.

100172204369717 is a deficient number, since it is larger than the sum of its proper divisors (1).

100172204369717 is an equidigital number, since it uses as much as digits as its factorization.

100172204369717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 889056, while the sum is 50.

The spelling of 100172204369717 in words is "one hundred trillion, one hundred seventy-two billion, two hundred four million, three hundred sixty-nine thousand, seven hundred seventeen".