2142749376217 has 2 divisors, whose sum is σ = 2142749376218. Its totient is φ = 2142749376216.

The previous prime is 2142749376203. The next prime is 2142749376223. The reversal of 2142749376217 is 7126739472412.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1963840679641 + 178908696576 = 1401371^2 + 422976^2 .

It is a cyclic number.

It is not a de Polignac number, because 2142749376217 - 2²³ = 2142740987609 is a prime.

It is not a weakly prime, because it can be changed into another prime (2142749376617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071374688108 + 1071374688109.

It is an arithmetic number, because the mean of its divisors is an integer number (1071374688109).

Almost surely, 2^{2142749376217} is an apocalyptic number.

It is an amenable number.

2142749376217 is a deficient number, since it is larger than the sum of its proper divisors (1).

2142749376217 is an equidigital number, since it uses as much as digits as its factorization.

2142749376217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7112448, while the sum is 55.

The spelling of 2142749376217 in words is "two trillion, one hundred forty-two billion, seven hundred forty-nine million, three hundred seventy-six thousand, two hundred seventeen".