2543042321055 has 12 divisors (see below), whose sum is σ = 4407940023240. Its totient is φ = 1356289237872.

The previous prime is 2543042321011. The next prime is 2543042321063. The reversal of 2543042321055 is 5501232403452.

2543042321055 is a `hidden beast` number, since 2 + 5 + 430 + 4 + 2 + 3 + 210 + 5 + 5 = 666.

It is not a de Polignac number, because 2543042321055 - 2⁶ = 2543042320991 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28256025745 + ... + 28256025834.

It is an arithmetic number, because the mean of its divisors is an integer number (367328335270).

Almost surely, 2^{2543042321055} is an apocalyptic number.

2543042321055 is a deficient number, since it is larger than the sum of its proper divisors (1864897702185).

2543042321055 is a wasteful number, since it uses less digits than its factorization.

2543042321055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56512051590 (or 56512051587 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

The spelling of 2543042321055 in words is "two trillion, five hundred forty-three billion, forty-two million, three hundred twenty-one thousand, fifty-five".