2640811043 has 16 divisors (see below), whose sum is σ = 2998173696. Its totient is φ = 2308828320.

The previous prime is 2640811001. The next prime is 2640811067. The reversal of 2640811043 is 3401180462.

2640811043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2640811043 - 2⁶ = 2640810979 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2640810997 and 2640811015.

It is not an unprimeable number, because it can be changed into a prime (2640811643) 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, 50771 + ... + 88652.

It is an arithmetic number, because the mean of its divisors is an integer number (187385856).

Almost surely, 2^2640811043 is an apocalyptic number.

2640811043 is a deficient number, since it is larger than the sum of its proper divisors (357362653).

2640811043 is a wasteful number, since it uses less digits than its factorization.

2640811043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139514.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 2640811043 is about 51388.8221600768. The cubic root of 2640811043 is about 1382.2261630867.

The spelling of 2640811043 in words is "two billion, six hundred forty million, eight hundred eleven thousand, forty-three".