2130136520 has 16 divisors (see below), whose sum is σ = 4792807260. Its totient is φ = 852054592.

The previous prime is 2130136483. The next prime is 2130136523. The reversal of 2130136520 is 256310312.

It can be written as a sum of positive squares in 2 ways, for example, as 2121339364 + 8797156 = 46058^2 + 2966^2 .

It is not an unprimeable number, because it can be changed into a prime (2130136523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26626667 + ... + 26626746.

Almost surely, 2^2130136520 is an apocalyptic number.

2130136520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2130136520 is an abundant number, since it is smaller than the sum of its proper divisors (2662670740).

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

2130136520 is a wasteful number, since it uses less digits than its factorization.

2130136520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53253424 (or 53253420 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 2130136520 is about 46153.4020414530. The cubic root of 2130136520 is about 1286.6758394053.

Adding to 2130136520 its reverse (256310312), we get a palindrome (2386446832).

The spelling of 2130136520 in words is "two billion, one hundred thirty million, one hundred thirty-six thousand, five hundred twenty".