2689401744397 has 2 divisors, whose sum is σ = 2689401744398. Its totient is φ = 2689401744396.

The previous prime is 2689401744371. The next prime is 2689401744443. The reversal of 2689401744397 is 7934471049862.

2689401744397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1678504216041 + 1010897528356 = 1295571^2 + 1005434^2 .

It is a cyclic number.

It is not a de Polignac number, because 2689401744397 - 2¹⁹ = 2689401220109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2689401744797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1344700872198 + 1344700872199.

It is an arithmetic number, because the mean of its divisors is an integer number (1344700872199).

Almost surely, 2^{2689401744397} is an apocalyptic number.

It is an amenable number.

2689401744397 is a deficient number, since it is larger than the sum of its proper divisors (1).

2689401744397 is an equidigital number, since it uses as much as digits as its factorization.

2689401744397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 73156608, while the sum is 64.

The spelling of 2689401744397 in words is "two trillion, six hundred eighty-nine billion, four hundred one million, seven hundred forty-four thousand, three hundred ninety-seven".