1231782882408 has 192 divisors, whose sum is σ = 3765290256000. Its totient is φ = 360946865664.

The previous prime is 1231782882397. The next prime is 1231782882457. The reversal of 1231782882408 is 8042882871321.

1231782882408 is a `hidden beast` number, since 1 + 2 + 317 + 8 + 2 + 88 + 240 + 8 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4804983 + ... + 5054841.

It is an arithmetic number, because the mean of its divisors is an integer number (19610886750).

Almost surely, 2^{1231782882408} is an apocalyptic number.

1231782882408 is a gapful number since it is divisible by the number (18) 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 1231782882408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1882645128000).

1231782882408 is an abundant number, since it is smaller than the sum of its proper divisors (2533507373592).

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

1231782882408 is a wasteful number, since it uses less digits than its factorization.

1231782882408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250136 (or 250129 counting only the distinct ones).

The product of its (nonzero) digits is 2752512, while the sum is 54.

The spelling of 1231782882408 in words is "one trillion, two hundred thirty-one billion, seven hundred eighty-two million, eight hundred eighty-two thousand, four hundred eight".