2133145520 has 40 divisors (see below), whose sum is σ = 5410434960. Its totient is φ = 775688960.

The previous prime is 2133145493. The next prime is 2133145541. The reversal of 2133145520 is 255413312.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 2133145520.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1211135 + ... + 1212894.

It is an arithmetic number, because the mean of its divisors is an integer number (135260874).

Almost surely, 2^2133145520 is an apocalyptic number.

2133145520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2133145520 is an abundant number, since it is smaller than the sum of its proper divisors (3277289440).

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

2133145520 is a wasteful number, since it uses less digits than its factorization.

2133145520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2424053 (or 2424047 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 2133145520 is about 46185.9883514470. The cubic root of 2133145520 is about 1287.2814009114.

Adding to 2133145520 its reverse (255413312), we get a palindrome (2388558832).

The spelling of 2133145520 in words is "two billion, one hundred thirty-three million, one hundred forty-five thousand, five hundred twenty".