11331272500 has 120 divisors (see below), whose sum is σ = 25547772096. Its totient is φ = 4393440000.

The previous prime is 11331272471. The next prime is 11331272507. The reversal of 11331272500 is 527213311.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11331272507) 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 39 ways as a sum of consecutive naturals, for example, 23267257 + ... + 23267743.

Almost surely, 2^11331272500 is an apocalyptic number.

11331272500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11331272500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12773886048).

11331272500 is an abundant number, since it is smaller than the sum of its proper divisors (14216499596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11331272500 is a wasteful number, since it uses less digits than its factorization.

11331272500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779 (or 762 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

Adding to 11331272500 its reverse (527213311), we get a palindrome (11858485811).

The spelling of 11331272500 in words is "eleven billion, three hundred thirty-one million, two hundred seventy-two thousand, five hundred".