2133361561 has 8 divisors (see below), whose sum is σ = 2143785600. Its totient is φ = 2122950480.

The previous prime is 2133361541. The next prime is 2133361567. The reversal of 2133361561 is 1651633312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2133361561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2133361567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 528810 + ... + 532828.

It is an arithmetic number, because the mean of its divisors is an integer number (267973200).

Almost surely, 2^2133361561 is an apocalyptic number.

It is an amenable number.

2133361561 is a deficient number, since it is larger than the sum of its proper divisors (10424039).

2133361561 is a wasteful number, since it uses less digits than its factorization.

2133361561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6479.

The product of its digits is 9720, while the sum is 31.

The square root of 2133361561 is about 46188.3271076145. The cubic root of 2133361561 is about 1287.3248572642.

Adding to 2133361561 its reverse (1651633312), we get a palindrome (3784994873).

The spelling of 2133361561 in words is "two billion, one hundred thirty-three million, three hundred sixty-one thousand, five hundred sixty-one".