11500263172 has 12 divisors (see below), whose sum is σ = 20131191360. Its totient is φ = 5748494216.

The previous prime is 11500263167. The next prime is 11500263179. The reversal of 11500263172 is 27136200511.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 11500263172.

It is not an unprimeable number, because it can be changed into a prime (11500263179) 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, 393472 + ... + 421687.

It is an arithmetic number, because the mean of its divisors is an integer number (1677599280).

Almost surely, 2^11500263172 is an apocalyptic number.

It is an amenable number.

11500263172 is a deficient number, since it is larger than the sum of its proper divisors (8630928188).

11500263172 is a wasteful number, since it uses less digits than its factorization.

11500263172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818690 (or 818688 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

Adding to 11500263172 its reverse (27136200511), we get a palindrome (38636463683).

The spelling of 11500263172 in words is "eleven billion, five hundred million, two hundred sixty-three thousand, one hundred seventy-two".