2135320020 has 144 divisors (see below), whose sum is σ = 6881329728. Its totient is φ = 534113280.

The previous prime is 2135320013. The next prime is 2135320051. The reversal of 2135320020 is 200235312.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2135319975 and 2135320002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1060815 + ... + 1062825.

It is an arithmetic number, because the mean of its divisors is an integer number (47787012).

Almost surely, 2^2135320020 is an apocalyptic number.

2135320020 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 2135320020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3440664864).

2135320020 is an abundant number, since it is smaller than the sum of its proper divisors (4746009708).

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

2135320020 is a wasteful number, since it uses less digits than its factorization.

2135320020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2390 (or 2385 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 2135320020 is about 46209.5230444981. The cubic root of 2135320020 is about 1287.7186648432.

Adding to 2135320020 its reverse (200235312), we get a palindrome (2335555332).

The spelling of 2135320020 in words is "two billion, one hundred thirty-five million, three hundred twenty thousand, twenty".