11811326500 has 48 divisors (see below), whose sum is σ = 25807541760. Its totient is φ = 4722405600.

The previous prime is 11811326491. The next prime is 11811326531. The reversal of 11811326500 is 562311811.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1579771 + ... + 1587229.

It is an arithmetic number, because the mean of its divisors is an integer number (537657120).

Almost surely, 2^11811326500 is an apocalyptic number.

11811326500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11811326500 is an abundant number, since it is smaller than the sum of its proper divisors (13996215260).

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

11811326500 is a wasteful number, since it uses less digits than its factorization.

11811326500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10645 (or 10633 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 28.

The spelling of 11811326500 in words is "eleven billion, eight hundred eleven million, three hundred twenty-six thousand, five hundred".