2120449981600 has 36 divisors (see below), whose sum is σ = 5176548519534. Its totient is φ = 848179992320.

The previous prime is 2120449981589. The next prime is 2120449981619. The reversal of 2120449981600 is 61899440212.

It can be written as a sum of positive squares in 3 ways, for example, as 1289778147856 + 830671833744 = 1135684^2 + 911412^2 .

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 5 ways as a sum of consecutive naturals, for example, 1325280439 + ... + 1325282038.

Almost surely, 2^{2120449981600} is an apocalyptic number.

2120449981600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120449981600 is an abundant number, since it is smaller than the sum of its proper divisors (3056098537934).

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

2120449981600 is a wasteful number, since it uses less digits than its factorization.

2120449981600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2650562497 (or 2650562484 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 46.

The spelling of 2120449981600 in words is "two trillion, one hundred twenty billion, four hundred forty-nine million, nine hundred eighty-one thousand, six hundred".