2135170620 has 72 divisors (see below), whose sum is σ = 7065480240. Its totient is φ = 517616640.

The previous prime is 2135170579. The next prime is 2135170627. The reversal of 2135170620 is 260715312.

It is a happy number.

2135170620 is a `hidden beast` number, since 2 + 1 + 35 + 1 + 7 + 0 + 620 = 666.

It is a super-2 number, since 2×2135170620² = 9117907153022368800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2135170627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 537205 + ... + 541164.

It is an arithmetic number, because the mean of its divisors is an integer number (98131670).

Almost surely, 2^2135170620 is an apocalyptic number.

2135170620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2135170620 is an abundant number, since it is smaller than the sum of its proper divisors (4930309620).

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

2135170620 is a wasteful number, since it uses less digits than its factorization.

2135170620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078395 (or 1078390 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 2135170620 is about 46207.9064663181. The cubic root of 2135170620 is about 1287.6886319279.

Adding to 2135170620 its reverse (260715312), we get a palindrome (2395885932).

The spelling of 2135170620 in words is "two billion, one hundred thirty-five million, one hundred seventy thousand, six hundred twenty".