20312445544120 has 64 divisors (see below), whose sum is σ = 46013780160000. Its totient is φ = 8069738446848.

The previous prime is 20312445544109. The next prime is 20312445544217. The reversal of 20312445544120 is 2144554421302.

It is a self number, because there is not a number n which added to its sum of digits gives 20312445544120.

It is a congruent number.

It is an unprimeable number.

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, 70416504 + ... + 70704376.

It is an arithmetic number, because the mean of its divisors is an integer number (718965315000).

Almost surely, 2^{20312445544120} is an apocalyptic number.

20312445544120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20312445544120 is an abundant number, since it is smaller than the sum of its proper divisors (25701334615880).

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

20312445544120 is a wasteful number, since it uses less digits than its factorization.

20312445544120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299872 (or 299868 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 37.

Adding to 20312445544120 its reverse (2144554421302), we get a palindrome (22456999965422).

The spelling of 20312445544120 in words is "twenty trillion, three hundred twelve billion, four hundred forty-five million, five hundred forty-four thousand, one hundred twenty".