120500617717 has 2 divisors, whose sum is σ = 120500617718. Its totient is φ = 120500617716.

The previous prime is 120500617681. The next prime is 120500617747. The reversal of 120500617717 is 717716005021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118938075876 + 1562541841 = 344874^2 + 39529^2 .

It is an emirp because it is prime and its reverse (717716005021) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120500617717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120500617747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60250308858 + 60250308859.

It is an arithmetic number, because the mean of its divisors is an integer number (60250308859).

Almost surely, 2^120500617717 is an apocalyptic number.

It is an amenable number.

120500617717 is a deficient number, since it is larger than the sum of its proper divisors (1).

120500617717 is an equidigital number, since it uses as much as digits as its factorization.

120500617717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20580, while the sum is 37.

The spelling of 120500617717 in words is "one hundred twenty billion, five hundred million, six hundred seventeen thousand, seven hundred seventeen".