2133561445 has 4 divisors (see below), whose sum is σ = 2560273740. Its totient is φ = 1706849152.

The previous prime is 2133561427. The next prime is 2133561461. The reversal of 2133561445 is 5441653312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1061260929 + 1072300516 = 32577^2 + 32746^2 .

It is a cyclic number.

It is not a de Polignac number, because 2133561445 - 2⁷ = 2133561317 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2133561445.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 213356140 + ... + 213356149.

It is an arithmetic number, because the mean of its divisors is an integer number (640068435).

Almost surely, 2^2133561445 is an apocalyptic number.

It is an amenable number.

2133561445 is a deficient number, since it is larger than the sum of its proper divisors (426712295).

2133561445 is an equidigital number, since it uses as much as digits as its factorization.

2133561445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426712294.

The product of its digits is 43200, while the sum is 34.

The square root of 2133561445 is about 46190.4908503904. The cubic root of 2133561445 is about 1287.3650610457.

The spelling of 2133561445 in words is "two billion, one hundred thirty-three million, five hundred sixty-one thousand, four hundred forty-five".