2000126563 has 4 divisors (see below), whose sum is σ = 2011177168. Its totient is φ = 1989075960.

The previous prime is 2000126539. The next prime is 2000126573. The reversal of 2000126563 is 3656210002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3656210002 = 2 ⋅1828105001.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2000126563 is a prime.

It is a super-3 number, since 3×2000126563³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2000126573) 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, 5525031 + ... + 5525392.

It is an arithmetic number, because the mean of its divisors is an integer number (502794292).

Almost surely, 2^2000126563 is an apocalyptic number.

2000126563 is a deficient number, since it is larger than the sum of its proper divisors (11050605).

2000126563 is a wasteful number, since it uses less digits than its factorization.

2000126563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11050604.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 2000126563 is about 44722.7745449676. The cubic root of 2000126563 is about 1259.9476258989.

Adding to 2000126563 its reverse (3656210002), we get a palindrome (5656336565).

It can be divided in two parts, 20001 and 26563, that added together give a palindrome (46564).

The spelling of 2000126563 in words is "two billion, one hundred twenty-six thousand, five hundred sixty-three".