2640586043 has 4 divisors (see below), whose sum is σ = 2640766128. Its totient is φ = 2640405960.

The previous prime is 2640586037. The next prime is 2640586057. The reversal of 2640586043 is 3406850462.

2640586043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2640586043 - 2¹⁶ = 2640520507 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2640585988 and 2640586006.

It is not an unprimeable number, because it can be changed into a prime (2640586033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65888 + ... + 98093.

It is an arithmetic number, because the mean of its divisors is an integer number (660191532).

Almost surely, 2^2640586043 is an apocalyptic number.

2640586043 is a deficient number, since it is larger than the sum of its proper divisors (180085).

2640586043 is a wasteful number, since it uses less digits than its factorization.

2640586043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180084.

The product of its (nonzero) digits is 138240, while the sum is 38.

The square root of 2640586043 is about 51386.6329214125. The cubic root of 2640586043 is about 1382.1869062429.

The spelling of 2640586043 in words is "two billion, six hundred forty million, five hundred eighty-six thousand, forty-three".