11215843500 has 192 divisors, whose sum is σ = 34687336320. Its totient is φ = 2806374400.

The previous prime is 11215843489. The next prime is 11215843531. The reversal of 11215843500 is 534851211.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14509114 + ... + 14509886.

It is an arithmetic number, because the mean of its divisors is an integer number (180663210).

Almost surely, 2^11215843500 is an apocalyptic number.

11215843500 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 11215843500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17343668160).

11215843500 is an abundant number, since it is smaller than the sum of its proper divisors (23471492820).

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

11215843500 is a wasteful number, since it uses less digits than its factorization.

11215843500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381 (or 1369 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 30.

The spelling of 11215843500 in words is "eleven billion, two hundred fifteen million, eight hundred forty-three thousand, five hundred".