12103643520 has 96 divisors (see below), whose sum is σ = 41795413920. Its totient is φ = 3227636736.

The previous prime is 12103643491. The next prime is 12103643567. The reversal of 12103643520 is 2534630121.

12103643520 is a `hidden beast` number, since 1 + 2 + 10 + 3 + 643 + 5 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1044904 + ... + 1056423.

It is an arithmetic number, because the mean of its divisors is an integer number (435368895).

Almost surely, 2^12103643520 is an apocalyptic number.

12103643520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12103643520 is an abundant number, since it is smaller than the sum of its proper divisors (29691770400).

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

12103643520 is a wasteful number, since it uses less digits than its factorization.

12103643520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2101352 (or 2101337 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The spelling of 12103643520 in words is "twelve billion, one hundred three million, six hundred forty-three thousand, five hundred twenty".