2381789081664 has 112 divisors (see below), whose sum is σ = 7038679587840. Its totient is φ = 789772884480.

The previous prime is 2381789081663. The next prime is 2381789081669. The reversal of 2381789081664 is 4661809871832.

2381789081664 is a `hidden beast` number, since 2 + 381 + 7 + 8 + 90 + 8 + 166 + 4 = 666.

It is a super-2 number, since 2×2381789081664² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2381789081663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3278199 + ... + 3938294.

Almost surely, 2^{2381789081664} is an apocalyptic number.

2381789081664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2381789081664 is an abundant number, since it is smaller than the sum of its proper divisors (4656890506176).

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

2381789081664 is a wasteful number, since it uses less digits than its factorization.

2381789081664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7216705 (or 7216689 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 63.

The spelling of 2381789081664 in words is "two trillion, three hundred eighty-one billion, seven hundred eighty-nine million, eighty-one thousand, six hundred sixty-four".