1812680239680 has 504 divisors, whose sum is σ = 6402101666688. Its totient is φ = 470684639232.

The previous prime is 1812680239639. The next prime is 1812680239691. The reversal of 1812680239680 is 869320862181.

1812680239680 is a `hidden beast` number, since 1 + 81 + 26 + 80 + 2 + 396 + 80 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1273843449 + ... + 1273844871.

It is an arithmetic number, because the mean of its divisors is an integer number (12702582672).

Almost surely, 2^{1812680239680} is an apocalyptic number.

1812680239680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1812680239680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3201050833344).

1812680239680 is an abundant number, since it is smaller than the sum of its proper divisors (4589421427008).

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

1812680239680 is a wasteful number, since it uses less digits than its factorization.

1812680239680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1675 (or 1589 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 54.

The spelling of 1812680239680 in words is "one trillion, eight hundred twelve billion, six hundred eighty million, two hundred thirty-nine thousand, six hundred eighty".