2021093816688 has 40 divisors (see below), whose sum is σ = 5801287808400. Its totient is φ = 673697938752.

The previous prime is 2021093816683. The next prime is 2021093816689. The reversal of 2021093816688 is 8866183901202.

2021093816688 is a `hidden beast` number, since 20 + 2 + 109 + 381 + 66 + 88 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021093816683) 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 7 ways as a sum of consecutive naturals, for example, 2339228523 + ... + 2339229386.

It is an arithmetic number, because the mean of its divisors is an integer number (145032195210).

Almost surely, 2^{2021093816688} is an apocalyptic number.

It is an amenable number.

2021093816688 is an abundant number, since it is smaller than the sum of its proper divisors (3780193991712).

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

2021093816688 is a wasteful number, since it uses less digits than its factorization.

2021093816688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4678457926 (or 4678457914 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 54.

The spelling of 2021093816688 in words is "two trillion, twenty-one billion, ninety-three million, eight hundred sixteen thousand, six hundred eighty-eight".