12533735261 has 2 divisors, whose sum is σ = 12533735262. Its totient is φ = 12533735260.

The previous prime is 12533735233. The next prime is 12533735267. The reversal of 12533735261 is 16253733521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11201047225 + 1332688036 = 105835^2 + 36506^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12533735261 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12533735267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6266867630 + 6266867631.

It is an arithmetic number, because the mean of its divisors is an integer number (6266867631).

Almost surely, 2^12533735261 is an apocalyptic number.

It is an amenable number.

12533735261 is a deficient number, since it is larger than the sum of its proper divisors (1).

12533735261 is an equidigital number, since it uses as much as digits as its factorization.

12533735261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 113400, while the sum is 38.

The spelling of 12533735261 in words is "twelve billion, five hundred thirty-three million, seven hundred thirty-five thousand, two hundred sixty-one".