2135855120 has 60 divisors (see below), whose sum is σ = 5776626924. Its totient is φ = 732291840.

The previous prime is 2135855101. The next prime is 2135855123. The reversal of 2135855120 is 215585312.

It can be written as a sum of positive squares in 2 ways, for example, as 352988944 + 1782866176 = 18788^2 + 42224^2 .

It is not an unprimeable number, because it can be changed into a prime (2135855123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 268511 + ... + 276350.

Almost surely, 2^2135855120 is an apocalyptic number.

2135855120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2135855120 is an abundant number, since it is smaller than the sum of its proper divisors (3640771804).

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

2135855120 is a wasteful number, since it uses less digits than its factorization.

2135855120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544888 (or 544875 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 32.

The square root of 2135855120 is about 46215.3126138945. The cubic root of 2135855120 is about 1287.8262210410.

The spelling of 2135855120 in words is "two billion, one hundred thirty-five million, eight hundred fifty-five thousand, one hundred twenty".