2021065368 has 48 divisors (see below), whose sum is σ = 5877591480. Its totient is φ = 577446912.

The previous prime is 2021065363. The next prime is 2021065369. The reversal of 2021065368 is 8635601202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021065363) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 858121 + ... + 860472.

Almost surely, 2^2021065368 is an apocalyptic number.

2021065368 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2021065368 is an abundant number, since it is smaller than the sum of its proper divisors (3856526112).

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

2021065368 is a wasteful number, since it uses less digits than its factorization.

2021065368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1718616 (or 1718605 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 2021065368 is about 44956.2606096192. The cubic root of 2021065368 is about 1264.3290599640.

The spelling of 2021065368 in words is "two billion, twenty-one million, sixty-five thousand, three hundred sixty-eight".