2840745738247 has 2 divisors, whose sum is σ = 2840745738248. Its totient is φ = 2840745738246.

The previous prime is 2840745738203. The next prime is 2840745738307. The reversal of 2840745738247 is 7428375470482.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2840745738247 - 2³¹ = 2838598254599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2840745732247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1420372869123 + 1420372869124.

It is an arithmetic number, because the mean of its divisors is an integer number (1420372869124).

Almost surely, 2^{2840745738247} is an apocalyptic number.

2840745738247 is a deficient number, since it is larger than the sum of its proper divisors (1).

2840745738247 is an equidigital number, since it uses as much as digits as its factorization.

2840745738247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84295680, while the sum is 61.

The spelling of 2840745738247 in words is "two trillion, eight hundred forty billion, seven hundred forty-five million, seven hundred thirty-eight thousand, two hundred forty-seven".