2135520897 has 12 divisors (see below), whose sum is σ = 2926402416. Its totient is φ = 1385200080.

The previous prime is 2135520883. The next prime is 2135520917. The reversal of 2135520897 is 7980255312.

It is a happy number.

It is not a de Polignac number, because 2135520897 - 2⁷ = 2135520769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2135520817) 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 11 ways as a sum of consecutive naturals, for example, 255879 + ... + 264092.

It is an arithmetic number, because the mean of its divisors is an integer number (243866868).

Almost surely, 2^2135520897 is an apocalyptic number.

It is an amenable number.

2135520897 is a deficient number, since it is larger than the sum of its proper divisors (790881519).

2135520897 is an equidigital number, since it uses as much as digits as its factorization.

2135520897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520048 (or 520011 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 2135520897 is about 46211.6965388634. The cubic root of 2135520897 is about 1287.7590436387.

The spelling of 2135520897 in words is "two billion, one hundred thirty-five million, five hundred twenty thousand, eight hundred ninety-seven".