12840775734451 has 16 divisors (see below), whose sum is σ = 15227177941696. Its totient is φ = 10598508343296.

The previous prime is 12840775734443. The next prime is 12840775734491. The reversal of 12840775734451 is 15443757704821.

It is a cyclic number.

It is not a de Polignac number, because 12840775734451 - 2³ = 12840775734443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12840775734401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 255533046 + ... + 255583291.

It is an arithmetic number, because the mean of its divisors is an integer number (951698621356).

Almost surely, 2^{12840775734451} is an apocalyptic number.

12840775734451 is a deficient number, since it is larger than the sum of its proper divisors (2386402207245).

12840775734451 is an equidigital number, since it uses as much as digits as its factorization.

12840775734451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511116478.

The product of its (nonzero) digits is 26342400, while the sum is 58.

The spelling of 12840775734451 in words is "twelve trillion, eight hundred forty billion, seven hundred seventy-five million, seven hundred thirty-four thousand, four hundred fifty-one".