2153021443320 has 128 divisors (see below), whose sum is σ = 7049392001280. Its totient is φ = 521712000000.

The previous prime is 2153021443297. The next prime is 2153021443337. The reversal of 2153021443320 is 233441203512.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 2609020 + ... + 3333620.

It is an arithmetic number, because the mean of its divisors is an integer number (55073375010).

Almost surely, 2^{2153021443320} is an apocalyptic number.

2153021443320 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 2153021443320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3524696000640).

2153021443320 is an abundant number, since it is smaller than the sum of its proper divisors (4896370557960).

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

2153021443320 is a wasteful number, since it uses less digits than its factorization.

2153021443320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726877 (or 726873 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 2153021443320 its reverse (233441203512), we get a palindrome (2386462646832).

The spelling of 2153021443320 in words is "two trillion, one hundred fifty-three billion, twenty-one million, four hundred forty-three thousand, three hundred twenty".