2866544641 has 4 divisors (see below), whose sum is σ = 3035164932. Its totient is φ = 2697924352.

The previous prime is 2866544633. The next prime is 2866544713. The reversal of 2866544641 is 1464456682.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2051727616 + 814817025 = 45296^2 + 28545^2 .

It is a cyclic number.

It is not a de Polignac number, because 2866544641 - 2³ = 2866544633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2866544591 and 2866544600.

It is not an unprimeable number, because it can be changed into a prime (2866544621) 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, 84310120 + ... + 84310153.

It is an arithmetic number, because the mean of its divisors is an integer number (758791233).

It is a Proth number, since it is equal to 10935 ⋅ 2¹⁸ + 1 and 10935 < 2¹⁸.

Almost surely, 2^2866544641 is an apocalyptic number.

It is an amenable number.

2866544641 is a deficient number, since it is larger than the sum of its proper divisors (168620291).

2866544641 is a wasteful number, since it uses less digits than its factorization.

2866544641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168620290.

The product of its digits is 1105920, while the sum is 46.

The square root of 2866544641 is about 53540.1217873101. The cubic root of 2866544641 is about 1420.5381549795.

The spelling of 2866544641 in words is "two billion, eight hundred sixty-six million, five hundred forty-four thousand, six hundred forty-one".