2566472243 has 4 divisors (see below), whose sum is σ = 2626157688. Its totient is φ = 2506786800.

The previous prime is 2566472219. The next prime is 2566472281. The reversal of 2566472243 is 3422746652.

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 2566472243 - 2²⁰ = 2565423667 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2566472243.

It is not an unprimeable number, because it can be changed into a prime (2566472143) 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, 29842658 + ... + 29842743.

It is an arithmetic number, because the mean of its divisors is an integer number (656539422).

Almost surely, 2^2566472243 is an apocalyptic number.

2566472243 is a deficient number, since it is larger than the sum of its proper divisors (59685445).

2566472243 is an equidigital number, since it uses as much as digits as its factorization.

2566472243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59685444.

The product of its digits is 483840, while the sum is 41.

The square root of 2566472243 is about 50660.3616548481. The cubic root of 2566472243 is about 1369.1326392170.

The spelling of 2566472243 in words is "two billion, five hundred sixty-six million, four hundred seventy-two thousand, two hundred forty-three".