1812336855540 has 96 divisors (see below), whose sum is σ = 5219884010880. Its totient is φ = 469545676800.

The previous prime is 1812336855503. The next prime is 1812336855551. The reversal of 1812336855540 is 455586332181.

It is a super-2 number, since 2×1812336855540² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 935610 + ... + 2121329.

It is an arithmetic number, because the mean of its divisors is an integer number (54373791780).

Almost surely, 2^{1812336855540} is an apocalyptic number.

1812336855540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1812336855540 is an abundant number, since it is smaller than the sum of its proper divisors (3407547155340).

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

1812336855540 is a wasteful number, since it uses less digits than its factorization.

1812336855540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3057233 (or 3057231 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 51.

The spelling of 1812336855540 in words is "one trillion, eight hundred twelve billion, three hundred thirty-six million, eight hundred fifty-five thousand, five hundred forty".