1816725418872 has 128 divisors (see below), whose sum is σ = 5590737116160. Its totient is φ = 479066711040.

The previous prime is 1816725418843. The next prime is 1816725418903. The reversal of 1816725418872 is 2788145276181.

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, 15932253 + ... + 16045875.

It is an arithmetic number, because the mean of its divisors is an integer number (43677633720).

Almost surely, 2^{1816725418872} is an apocalyptic number.

1816725418872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1816725418872 is an abundant number, since it is smaller than the sum of its proper divisors (3774011697288).

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

1816725418872 is a wasteful number, since it uses less digits than its factorization.

1816725418872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120973 (or 120969 counting only the distinct ones).

The product of its digits is 12042240, while the sum is 60.

The spelling of 1816725418872 in words is "one trillion, eight hundred sixteen billion, seven hundred twenty-five million, four hundred eighteen thousand, eight hundred seventy-two".