2511563423 has 4 divisors (see below), whose sum is σ = 2520900360. Its totient is φ = 2502226488.

The previous prime is 2511563413. The next prime is 2511563543. The reversal of 2511563423 is 3243651152.

It is a happy number.

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 2511563423 - 2⁸ = 2511563167 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 2511563423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2511563413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4668065 + ... + 4668602.

It is an arithmetic number, because the mean of its divisors is an integer number (630225090).

Almost surely, 2^2511563423 is an apocalyptic number.

2511563423 is a deficient number, since it is larger than the sum of its proper divisors (9336937).

2511563423 is an equidigital number, since it uses as much as digits as its factorization.

2511563423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9336936.

The product of its digits is 21600, while the sum is 32.

The square root of 2511563423 is about 50115.5008255929. The cubic root of 2511563423 is about 1359.2981209267.

The spelling of 2511563423 in words is "two billion, five hundred eleven million, five hundred sixty-three thousand, four hundred twenty-three".