2566740082643 has 16 divisors (see below), whose sum is σ = 2966972317440. Its totient is φ = 2195949852000.

The previous prime is 2566740082607. The next prime is 2566740082649. The reversal of 2566740082643 is 3462800476652.

It is not a de Polignac number, because 2566740082643 - 2¹⁸ = 2566739820499 is a prime.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (2566740082649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40634180 + ... + 40697297.

It is an arithmetic number, because the mean of its divisors is an integer number (185435769840).

Almost surely, 2^{2566740082643} is an apocalyptic number.

2566740082643 is a deficient number, since it is larger than the sum of its proper divisors (400232234797).

2566740082643 is a wasteful number, since it uses less digits than its factorization.

2566740082643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81331658.

The product of its (nonzero) digits is 11612160, while the sum is 53.

The spelling of 2566740082643 in words is "two trillion, five hundred sixty-six billion, seven hundred forty million, eighty-two thousand, six hundred forty-three".