2133561461 has 2 divisors, whose sum is σ = 2133561462. Its totient is φ = 2133561460.

The previous prime is 2133561427. The next prime is 2133561517. The reversal of 2133561461 is 1641653312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1217591236 + 915970225 = 34894^2 + 30265^2 .

It is a cyclic number.

It is not a de Polignac number, because 2133561461 - 2¹⁴ = 2133545077 is a prime.

It is a super-3 number, since 3×2133561461³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2133561161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1066780730 + 1066780731.

It is an arithmetic number, because the mean of its divisors is an integer number (1066780731).

Almost surely, 2^2133561461 is an apocalyptic number.

It is an amenable number.

2133561461 is a deficient number, since it is larger than the sum of its proper divisors (1).

2133561461 is an equidigital number, since it uses as much as digits as its factorization.

2133561461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 32.

The square root of 2133561461 is about 46190.4910235862. The cubic root of 2133561461 is about 1287.3650642638.

The spelling of 2133561461 in words is "two billion, one hundred thirty-three million, five hundred sixty-one thousand, four hundred sixty-one".