1812963621120 has 72 divisors (see below), whose sum is σ = 5790152577216. Its totient is φ = 483456964608.

The previous prime is 1812963621101. The next prime is 1812963621239. The reversal of 1812963621120 is 211263692181.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236059132 + ... + 236066811.

Almost surely, 2^{1812963621120} is an apocalyptic number.

1812963621120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1812963621120 is an abundant number, since it is smaller than the sum of its proper divisors (3977188956096).

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

1812963621120 is an equidigital number, since it uses as much as digits as its factorization.

1812963621120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472125967 (or 472125953 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 42.

The spelling of 1812963621120 in words is "one trillion, eight hundred twelve billion, nine hundred sixty-three million, six hundred twenty-one thousand, one hundred twenty".