2132065657 has 4 divisors (see below), whose sum is σ = 2132162676. Its totient is φ = 2131968640.

The previous prime is 2132065643. The next prime is 2132065673. The reversal of 2132065657 is 7565602312.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 763361641 + 1368704016 = 27629^2 + 36996^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2132065657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2132065627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1953 + ... + 65329.

It is an arithmetic number, because the mean of its divisors is an integer number (533040669).

Almost surely, 2^2132065657 is an apocalyptic number.

It is an amenable number.

2132065657 is a deficient number, since it is larger than the sum of its proper divisors (97019).

2132065657 is an equidigital number, since it uses as much as digits as its factorization.

2132065657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97018.

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 2132065657 is about 46174.2964970772. The cubic root of 2132065657 is about 1287.0641439425.

Adding to 2132065657 its reverse (7565602312), we get a palindrome (9697667969).

The spelling of 2132065657 in words is "two billion, one hundred thirty-two million, sixty-five thousand, six hundred fifty-seven".