2133009961 has 2 divisors, whose sum is σ = 2133009962. Its totient is φ = 2133009960.

The previous prime is 2133009919. The next prime is 2133010021. The reversal of 2133009961 is 1699003312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2127515625 + 5494336 = 46125^2 + 2344^2 .

It is a cyclic number.

It is not a de Polignac number, because 2133009961 - 2⁹ = 2133009449 is a prime.

It is not a weakly prime, because it can be changed into another prime (2133009061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1066504980 + 1066504981.

It is an arithmetic number, because the mean of its divisors is an integer number (1066504981).

Almost surely, 2^2133009961 is an apocalyptic number.

It is an amenable number.

2133009961 is a deficient number, since it is larger than the sum of its proper divisors (1).

2133009961 is an equidigital number, since it uses as much as digits as its factorization.

2133009961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 2133009961 is about 46184.5207943094. The cubic root of 2133009961 is about 1287.2541319051.

The spelling of 2133009961 in words is "two billion, one hundred thirty-three million, nine thousand, nine hundred sixty-one".