4121981347717 has 2 divisors, whose sum is σ = 4121981347718. Its totient is φ = 4121981347716.

The previous prime is 4121981347667. The next prime is 4121981347723. The reversal of 4121981347717 is 7177431891214.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3883682138436 + 238299209281 = 1970706^2 + 488159^2 .

It is a cyclic number.

It is not a de Polignac number, because 4121981347717 - 2²³ = 4121972959109 is a prime.

It is a super-2 number, since 2×4121981347717² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4121981347747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2060990673858 + 2060990673859.

It is an arithmetic number, because the mean of its divisors is an integer number (2060990673859).

Almost surely, 2^{4121981347717} is an apocalyptic number.

It is an amenable number.

4121981347717 is a deficient number, since it is larger than the sum of its proper divisors (1).

4121981347717 is an equidigital number, since it uses as much as digits as its factorization.

4121981347717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2370816, while the sum is 55.

The spelling of 4121981347717 in words is "four trillion, one hundred twenty-one billion, nine hundred eighty-one million, three hundred forty-seven thousand, seven hundred seventeen".