2543728455 has 40 divisors (see below), whose sum is σ = 4799876400. Its totient is φ = 1285248384.

The previous prime is 2543728433. The next prime is 2543728463. The reversal of 2543728455 is 5548273452.

It is not a de Polignac number, because 2543728455 - 2⁶ = 2543728391 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 2543728455.

It is a congruent number.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 157590 + ... + 172979.

It is an arithmetic number, because the mean of its divisors is an integer number (119996910).

Almost surely, 2^2543728455 is an apocalyptic number.

2543728455 is a deficient number, since it is larger than the sum of its proper divisors (2256147945).

2543728455 is a wasteful number, since it uses less digits than its factorization.

2543728455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330605 (or 330596 counting only the distinct ones).

The product of its digits is 1344000, while the sum is 45.

The square root of 2543728455 is about 50435.3889149276. The cubic root of 2543728455 is about 1365.0762667204.

The spelling of 2543728455 in words is "two billion, five hundred forty-three million, seven hundred twenty-eight thousand, four hundred fifty-five".