1982855085660 has 72 divisors (see below), whose sum is σ = 6014810111856. Its totient is φ = 528748197120.

The previous prime is 1982855085637. The next prime is 1982855085661. The reversal of 1982855085660 is 665805582891.

1982855085660 is a `hidden beast` number, since 1 + 9 + 8 + 28 + 550 + 8 + 56 + 6 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1982855085661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8690640 + ... + 8915880.

Almost surely, 2^{1982855085660} is an apocalyptic number.

1982855085660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1982855085660 is an abundant number, since it is smaller than the sum of its proper divisors (4031955026196).

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

1982855085660 is a wasteful number, since it uses less digits than its factorization.

1982855085660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274163 (or 274158 counting only the distinct ones).

The product of its (nonzero) digits is 41472000, while the sum is 63.

The spelling of 1982855085660 in words is "one trillion, nine hundred eighty-two billion, eight hundred fifty-five million, eighty-five thousand, six hundred sixty".