2021518080 has 288 divisors, whose sum is σ = 7424625600. Its totient is φ = 520224768.

The previous prime is 2021518073. The next prime is 2021518097. The reversal of 2021518080 is 808151202.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1001232 + ... + 1003248.

It is an arithmetic number, because the mean of its divisors is an integer number (25779950).

Almost surely, 2^2021518080 is an apocalyptic number.

2021518080 is a gapful number since it is divisible by the number (20) 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 2021518080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3712312800).

2021518080 is an abundant number, since it is smaller than the sum of its proper divisors (5403107520).

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

2021518080 is a wasteful number, since it uses less digits than its factorization.

2021518080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2076 (or 2056 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 2021518080 is about 44961.2953550051. The cubic root of 2021518080 is about 1264.4234547677.

Adding to 2021518080 its reverse (808151202), we get a palindrome (2829669282).

The spelling of 2021518080 in words is "two billion, twenty-one million, five hundred eighteen thousand, eighty".