2143115520 has 288 divisors, whose sum is σ = 8425466112. Its totient is φ = 452100096.

The previous prime is 2143115453. The next prime is 2143115543. The reversal of 2143115520 is 255113412.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 346374 + ... + 352506.

Almost surely, 2^2143115520 is an apocalyptic number.

2143115520 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 2143115520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4212733056).

2143115520 is an abundant number, since it is smaller than the sum of its proper divisors (6282350592).

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

2143115520 is a wasteful number, since it uses less digits than its factorization.

2143115520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6177 (or 6163 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 2143115520 is about 46293.7956966158. The cubic root of 2143115520 is about 1289.2838041189.

Adding to 2143115520 its reverse (255113412), we get a palindrome (2398228932).

The spelling of 2143115520 in words is "two billion, one hundred forty-three million, one hundred fifteen thousand, five hundred twenty".