2135550000 has 240 divisors, whose sum is σ = 7207038720. Its totient is φ = 543840000.

The previous prime is 2135549971. The next prime is 2135550007. The reversal of 2135550000 is 555312.

It is a tau number, because it is divible by the number of its divisors (240).

It is not an unprimeable number, because it can be changed into a prime (2135550007) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3449691 + ... + 3450309.

It is an arithmetic number, because the mean of its divisors is an integer number (30029328).

Almost surely, 2^2135550000 is an apocalyptic number.

2135550000 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 2135550000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3603519360).

2135550000 is an abundant number, since it is smaller than the sum of its proper divisors (5071488720).

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

2135550000 is an equidigital number, since it uses as much as digits as its factorization.

2135550000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678 (or 652 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 2135550000 is about 46212.0114256023. The cubic root of 2135550000 is about 1287.7648934965.

The spelling of 2135550000 in words is "two billion, one hundred thirty-five million, five hundred fifty thousand".