2081355136 has 128 divisors (see below), whose sum is σ = 4873527360. Its totient is φ = 867041280.

The previous prime is 2081355091. The next prime is 2081355167. The reversal of 2081355136 is 6315531802.

It is a tau number, because it is divible by the number of its divisors (128).

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6175960 + ... + 6176296.

Almost surely, 2^2081355136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2081355136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2436763680).

2081355136 is an abundant number, since it is smaller than the sum of its proper divisors (2792172224).

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

2081355136 is a wasteful number, since it uses less digits than its factorization.

2081355136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532 (or 520 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 2081355136 is about 45621.8712461468. The cubic root of 2081355136 is about 1276.7780163006.

Adding to 2081355136 its reverse (6315531802), we get a palindrome (8396886938).

The spelling of 2081355136 in words is "two billion, eighty-one million, three hundred fifty-five thousand, one hundred thirty-six".