11851155500 has 96 divisors (see below), whose sum is σ = 26649063168. Its totient is φ = 4600800000.

The previous prime is 11851155431. The next prime is 11851155521. The reversal of 11851155500 is 555115811.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13893074 + ... + 13893926.

It is an arithmetic number, because the mean of its divisors is an integer number (277594408).

Almost surely, 2^11851155500 is an apocalyptic number.

11851155500 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 11851155500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13324531584).

11851155500 is an abundant number, since it is smaller than the sum of its proper divisors (14797907668).

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

11851155500 is a wasteful number, since it uses less digits than its factorization.

11851155500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660 (or 1648 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 32.

The spelling of 11851155500 in words is "eleven billion, eight hundred fifty-one million, one hundred fifty-five thousand, five hundred".