20344145211125 has 16 divisors (see below), whose sum is σ = 25768440894144. Its totient is φ = 16032400995600.

The previous prime is 20344145211121. The next prime is 20344145211133. The reversal of 20344145211125 is 52111254144302.

It is not a de Polignac number, because 20344145211125 - 2² = 20344145211121 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20344145211121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1214567459 + ... + 1214584208.

It is an arithmetic number, because the mean of its divisors is an integer number (1610527555884).

Almost surely, 2^{20344145211125} is an apocalyptic number.

20344145211125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20344145211125 is a deficient number, since it is larger than the sum of its proper divisors (5424295683019).

20344145211125 is an equidigital number, since it uses as much as digits as its factorization.

20344145211125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2429151749 (or 2429151739 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 35.

Adding to 20344145211125 its reverse (52111254144302), we get a palindrome (72455399355427).

The spelling of 20344145211125 in words is "twenty trillion, three hundred forty-four billion, one hundred forty-five million, two hundred eleven thousand, one hundred twenty-five".