2540642054905 has 16 divisors (see below), whose sum is σ = 3079981396800. Its totient is φ = 2011794713280.

The previous prime is 2540642054887. The next prime is 2540642054911. The reversal of 2540642054905 is 5094502460452.

It is not a de Polignac number, because 2540642054905 - 2³³ = 2532052120313 is a prime.

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, 5292010 + ... + 5752099.

It is an arithmetic number, because the mean of its divisors is an integer number (192498837300).

Almost surely, 2^{2540642054905} is an apocalyptic number.

It is an amenable number.

2540642054905 is a deficient number, since it is larger than the sum of its proper divisors (539339341895).

2540642054905 is a wasteful number, since it uses less digits than its factorization.

2540642054905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11044584.

The product of its (nonzero) digits is 1728000, while the sum is 46.

The spelling of 2540642054905 in words is "two trillion, five hundred forty billion, six hundred forty-two million, fifty-four thousand, nine hundred five".