2109986641117 has 2 divisors, whose sum is σ = 2109986641118. Its totient is φ = 2109986641116.

The previous prime is 2109986641111. The next prime is 2109986641183. The reversal of 2109986641117 is 7111466899012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1626897699001 + 483088942116 = 1275499^2 + 695046^2 .

It is a cyclic number.

It is not a de Polignac number, because 2109986641117 - 2³¹ = 2107839157469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2109986641111) 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, 1054993320558 + 1054993320559.

It is an arithmetic number, because the mean of its divisors is an integer number (1054993320559).

Almost surely, 2^{2109986641117} is an apocalyptic number.

It is an amenable number.

2109986641117 is a deficient number, since it is larger than the sum of its proper divisors (1).

2109986641117 is an equidigital number, since it uses as much as digits as its factorization.

2109986641117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1306368, while the sum is 55.

The spelling of 2109986641117 in words is "two trillion, one hundred nine billion, nine hundred eighty-six million, six hundred forty-one thousand, one hundred seventeen".