11505223004 has 24 divisors (see below), whose sum is σ = 21981431808. Its totient is φ = 5225619440.

The previous prime is 11505222979. The next prime is 11505223021. The reversal of 11505223004 is 40032250511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42524 + ... + 157539.

It is an arithmetic number, because the mean of its divisors is an integer number (915892992).

Almost surely, 2^11505223004 is an apocalyptic number.

It is an amenable number.

11505223004 is a deficient number, since it is larger than the sum of its proper divisors (10476208804).

11505223004 is a wasteful number, since it uses less digits than its factorization.

11505223004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201385 (or 201383 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 11505223004 its reverse (40032250511), we get a palindrome (51537473515).

The spelling of 11505223004 in words is "eleven billion, five hundred five million, two hundred twenty-three thousand, four".