2171318762341 has 2 divisors, whose sum is σ = 2171318762342. Its totient is φ = 2171318762340.

The previous prime is 2171318762299. The next prime is 2171318762387. The reversal of 2171318762341 is 1432678131712.

It is an a-pointer prime, because the next prime (2171318762387) can be obtained adding 2171318762341 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1622910384225 + 548408378116 = 1273935^2 + 740546^2 .

It is a cyclic number.

It is not a de Polignac number, because 2171318762341 - 2⁷ = 2171318762213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2171318762291 and 2171318762300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2171318762141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1085659381170 + 1085659381171.

It is an arithmetic number, because the mean of its divisors is an integer number (1085659381171).

Almost surely, 2^{2171318762341} is an apocalyptic number.

It is an amenable number.

2171318762341 is a deficient number, since it is larger than the sum of its proper divisors (1).

2171318762341 is an equidigital number, since it uses as much as digits as its factorization.

2171318762341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 46.

The spelling of 2171318762341 in words is "two trillion, one hundred seventy-one billion, three hundred eighteen million, seven hundred sixty-two thousand, three hundred forty-one".