2540066705 has 16 divisors (see below), whose sum is σ = 3332332224. Its totient is φ = 1843346880.

The previous prime is 2540066693. The next prime is 2540066723. The reversal of 2540066705 is 5076600452.

It is not a de Polignac number, because 2540066705 - 2⁴ = 2540066689 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23762 + ... + 75131.

It is an arithmetic number, because the mean of its divisors is an integer number (208270764).

Almost surely, 2^2540066705 is an apocalyptic number.

It is an amenable number.

2540066705 is a deficient number, since it is larger than the sum of its proper divisors (792265519).

2540066705 is a wasteful number, since it uses less digits than its factorization.

2540066705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99376.

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 2540066705 is about 50399.0744458666. The cubic root of 2540066705 is about 1364.4209336084.

The spelling of 2540066705 in words is "two billion, five hundred forty million, sixty-six thousand, seven hundred five".