12125144445440 has 160 divisors (see below), whose sum is σ = 32669460020736. Its totient is φ = 4282324992000.

The previous prime is 12125144445391. The next prime is 12125144445503. The reversal of 12125144445440 is 4454444152121.

It is a tau number, because it is divible by the number of its divisors (160).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7154936 + ... + 8685815.

Almost surely, 2^{12125144445440} is an apocalyptic number.

12125144445440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12125144445440 is an abundant number, since it is smaller than the sum of its proper divisors (20544315575296).

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

12125144445440 is a wasteful number, since it uses less digits than its factorization.

12125144445440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15840810 (or 15840794 counting only the distinct ones).

The product of its (nonzero) digits is 409600, while the sum is 41.

Adding to 12125144445440 its reverse (4454444152121), we get a palindrome (16579588597561).

The spelling of 12125144445440 in words is "twelve trillion, one hundred twenty-five billion, one hundred forty-four million, four hundred forty-five thousand, four hundred forty".