2543320138727 has 16 divisors (see below), whose sum is σ = 2604567813120. Its totient is φ = 2482372017312.

The previous prime is 2543320138717. The next prime is 2543320138769. The reversal of 2543320138727 is 7278310233452.

It is a cyclic number.

It is not a de Polignac number, because 2543320138727 - 2¹⁰ = 2543320137703 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2543320138717) 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 in 15 ways as a sum of consecutive naturals, for example, 165325478 + ... + 165340860.

It is an arithmetic number, because the mean of its divisors is an integer number (162785488320).

Almost surely, 2^{2543320138727} is an apocalyptic number.

2543320138727 is a deficient number, since it is larger than the sum of its proper divisors (61247674393).

2543320138727 is a wasteful number, since it uses less digits than its factorization.

2543320138727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24862.

The product of its (nonzero) digits is 1693440, while the sum is 47.

The spelling of 2543320138727 in words is "two trillion, five hundred forty-three billion, three hundred twenty million, one hundred thirty-eight thousand, seven hundred twenty-seven".