3281981139216 has 80 divisors (see below), whose sum is σ = 10145155390720. Its totient is φ = 1009840348800.

The previous prime is 3281981139211. The next prime is 3281981139223. The reversal of 3281981139216 is 6129311891823.

It is a happy number.

3281981139216 is a `hidden beast` number, since 328 + 1 + 98 + 1 + 13 + 9 + 216 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (3281981139211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 292193560 + ... + 292204791.

It is an arithmetic number, because the mean of its divisors is an integer number (126814442384).

Almost surely, 2^{3281981139216} is an apocalyptic number.

3281981139216 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3281981139216 is an abundant number, since it is smaller than the sum of its proper divisors (6863174251504).

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

3281981139216 is a wasteful number, since it uses less digits than its factorization.

3281981139216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584398381 (or 584398369 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 54.

The spelling of 3281981139216 in words is "three trillion, two hundred eighty-one billion, nine hundred eighty-one million, one hundred thirty-nine thousand, two hundred sixteen".