2566326503 has 4 divisors (see below), whose sum is σ = 2763736248. Its totient is φ = 2368916760.

The previous prime is 2566326491. The next prime is 2566326509. The reversal of 2566326503 is 3056236652.

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 2566326503 - 2⁸ = 2566326247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2566326509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98704853 + ... + 98704878.

It is an arithmetic number, because the mean of its divisors is an integer number (690934062).

Almost surely, 2^2566326503 is an apocalyptic number.

2566326503 is a deficient number, since it is larger than the sum of its proper divisors (197409745).

2566326503 is a wasteful number, since it uses less digits than its factorization.

2566326503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197409744.

The product of its (nonzero) digits is 194400, while the sum is 38.

The square root of 2566326503 is about 50658.9232317466. The cubic root of 2566326503 is about 1369.1067228164.

The spelling of 2566326503 in words is "two billion, five hundred sixty-six million, three hundred twenty-six thousand, five hundred three".