2690288991749 has 2 divisors, whose sum is σ = 2690288991750. Its totient is φ = 2690288991748.

The previous prime is 2690288991743. The next prime is 2690288991751. The reversal of 2690288991749 is 9471998820962.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2147156841124 + 543132150625 = 1465318^2 + 736975^2 .

It is a cyclic number.

It is not a de Polignac number, because 2690288991749 - 2¹² = 2690288987653 is a prime.

Together with 2690288991751, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2690288991743) 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, 1345144495874 + 1345144495875.

It is an arithmetic number, because the mean of its divisors is an integer number (1345144495875).

Almost surely, 2^{2690288991749} is an apocalyptic number.

It is an amenable number.

2690288991749 is a deficient number, since it is larger than the sum of its proper divisors (1).

2690288991749 is an equidigital number, since it uses as much as digits as its factorization.

2690288991749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 282175488, while the sum is 74.

The spelling of 2690288991749 in words is "two trillion, six hundred ninety billion, two hundred eighty-eight million, nine hundred ninety-one thousand, seven hundred forty-nine".