2135504520 has 64 divisors (see below), whose sum is σ = 7118352000. Its totient is φ = 569467584.

The previous prime is 2135504431. The next prime is 2135504573. The reversal of 2135504520 is 254055312.

It is a happy number.

2135504520 is a `hidden beast` number, since 2 + 135 + 5 + 0 + 4 + 520 = 666.

2135504520 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 987580 + ... + 989739.

It is an arithmetic number, because the mean of its divisors is an integer number (111224250).

Almost surely, 2^2135504520 is an apocalyptic number.

2135504520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2135504520 is an abundant number, since it is smaller than the sum of its proper divisors (4982847480).

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

2135504520 is a wasteful number, since it uses less digits than its factorization.

2135504520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1977339 (or 1977329 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 2135504520 is about 46211.5193431248. The cubic root of 2135504520 is about 1287.7557517511.

Adding to 2135504520 its reverse (254055312), we get a palindrome (2389559832).

The spelling of 2135504520 in words is "two billion, one hundred thirty-five million, five hundred four thousand, five hundred twenty".