2135520000 has 270 divisors, whose sum is σ = 7699263572. Its totient is φ = 569088000.

The previous prime is 2135519983. The next prime is 2135520007. The reversal of 2135520000 is 255312.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2135520007) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1439259 + ... + 1440741.

Almost surely, 2^2135520000 is an apocalyptic number.

2135520000 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 2135520000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3849631786).

2135520000 is an abundant number, since it is smaller than the sum of its proper divisors (5563743572).

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

2135520000 is an equidigital number, since it uses as much as digits as its factorization.

2135520000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1525 (or 1493 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 2135520000 is about 46211.6868335273. The cubic root of 2135520000 is about 1287.7588633360.

Adding to 2135520000 its reverse (255312), we get a palindrome (2135775312).

The spelling of 2135520000 in words is "two billion, one hundred thirty-five million, five hundred twenty thousand".