11512331205500 has 24 divisors (see below), whose sum is σ = 25142931353904. Its totient is φ = 4604932482000.

The previous prime is 11512331205449. The next prime is 11512331205523. The reversal of 11512331205500 is 550213321511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11512330706 + ... + 11512331705.

It is an arithmetic number, because the mean of its divisors is an integer number (1047622139746).

Almost surely, 2^{11512331205500} is an apocalyptic number.

11512331205500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11512331205500 is an abundant number, since it is smaller than the sum of its proper divisors (13630600148404).

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

11512331205500 is a wasteful number, since it uses less digits than its factorization.

11512331205500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23024662430 (or 23024662418 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 29.

The spelling of 11512331205500 in words is "eleven trillion, five hundred twelve billion, three hundred thirty-one million, two hundred five thousand, five hundred".