2135615500 has 48 divisors (see below), whose sum is σ = 4681692288. Its totient is φ = 851040000.

The previous prime is 2135615491. The next prime is 2135615519. The reversal of 2135615500 is 55165312.

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, 127620 + ... + 143380.

It is an arithmetic number, because the mean of its divisors is an integer number (97535256).

Almost surely, 2^2135615500 is an apocalyptic number.

2135615500 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 2135615500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2340846144).

2135615500 is an abundant number, since it is smaller than the sum of its proper divisors (2546076788).

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

2135615500 is a wasteful number, since it uses less digits than its factorization.

2135615500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16051 (or 16039 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 2135615500 is about 46212.7201103765. The cubic root of 2135615500 is about 1287.7780591507.

It can be divided in two parts, 21356 and 15500, that added together give a triangular number (36856 = T₂₇₁).

The spelling of 2135615500 in words is "two billion, one hundred thirty-five million, six hundred fifteen thousand, five hundred".