2543454020239 has 48 divisors (see below), whose sum is σ = 3045137778144. Its totient is φ = 2113929861120.

The previous prime is 2543454020231. The next prime is 2543454020243. The reversal of 2543454020239 is 9320204543452.

It is not a de Polignac number, because 2543454020239 - 2³ = 2543454020231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2543454020195 and 2543454020204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2543454020231) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 46932172 + ... + 46986334.

It is an arithmetic number, because the mean of its divisors is an integer number (63440370378).

Almost surely, 2^{2543454020239} is an apocalyptic number.

2543454020239 is a deficient number, since it is larger than the sum of its proper divisors (501683757905).

2543454020239 is a wasteful number, since it uses less digits than its factorization.

2543454020239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54856 (or 54845 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 43.

The spelling of 2543454020239 in words is "two trillion, five hundred forty-three billion, four hundred fifty-four million, twenty thousand, two hundred thirty-nine".