2689345880149 has 2 divisors, whose sum is σ = 2689345880150. Its totient is φ = 2689345880148.

The previous prime is 2689345880051. The next prime is 2689345880189. The reversal of 2689345880149 is 9410885439862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1945517253124 + 743828627025 = 1394818^2 + 862455^2 .

It is a cyclic number.

It is not a de Polignac number, because 2689345880149 - 2²¹ = 2689343782997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2689345880189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1344672940074 + 1344672940075.

It is an arithmetic number, because the mean of its divisors is an integer number (1344672940075).

Almost surely, 2^{2689345880149} is an apocalyptic number.

It is an amenable number.

2689345880149 is a deficient number, since it is larger than the sum of its proper divisors (1).

2689345880149 is an equidigital number, since it uses as much as digits as its factorization.

2689345880149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 119439360, while the sum is 67.

The spelling of 2689345880149 in words is "two trillion, six hundred eighty-nine billion, three hundred forty-five million, eight hundred eighty thousand, one hundred forty-nine".