2543872705 has 16 divisors (see below), whose sum is σ = 3340891008. Its totient is φ = 1844128000.

The previous prime is 2543872693. The next prime is 2543872711. The reversal of 2543872705 is 5072783452.

It is not a de Polignac number, because 2543872705 - 2²⁷ = 2409654977 is a prime.

It is a super-3 number, since 3×2543872705³ (a number of 29 digits) contains 333 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57256 + ... + 91465.

It is an arithmetic number, because the mean of its divisors is an integer number (208805688).

Almost surely, 2^2543872705 is an apocalyptic number.

It is an amenable number.

2543872705 is a deficient number, since it is larger than the sum of its proper divisors (797018303).

2543872705 is a wasteful number, since it uses less digits than its factorization.

2543872705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149048.

The product of its (nonzero) digits is 470400, while the sum is 43.

The square root of 2543872705 is about 50436.8189421181. The cubic root of 2543872705 is about 1365.1020698585.

The spelling of 2543872705 in words is "two billion, five hundred forty-three million, eight hundred seventy-two thousand, seven hundred five".