2133455500 has 96 divisors (see below), whose sum is σ = 5207582016. Its totient is φ = 756800000.

The previous prime is 2133455491. The next prime is 2133455501. The reversal of 2133455500 is 55543312.

It is not an unprimeable number, because it can be changed into a prime (2133455501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 220770 + ... + 230230.

It is an arithmetic number, because the mean of its divisors is an integer number (54245646).

Almost surely, 2^2133455500 is an apocalyptic number.

2133455500 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 2133455500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2603791008).

2133455500 is an abundant number, since it is smaller than the sum of its proper divisors (3074126516).

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

2133455500 is a wasteful number, since it uses less digits than its factorization.

2133455500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9532 (or 9520 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 2133455500 is about 46189.3440091976. The cubic root of 2133455500 is about 1287.3437520509.

Adding to 2133455500 its reverse (55543312), we get a palindrome (2188998812).

The spelling of 2133455500 in words is "two billion, one hundred thirty-three million, four hundred fifty-five thousand, five hundred".