13432520261 has 2 divisors, whose sum is σ = 13432520262. Its totient is φ = 13432520260.

The previous prime is 13432520249. The next prime is 13432520263. The reversal of 13432520261 is 16202523431.

It is a happy number.

13432520261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8929305025 + 4503215236 = 94495^2 + 67106^2 .

It is an emirp because it is prime and its reverse (16202523431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13432520261 - 2⁶ = 13432520197 is a prime.

It is a Sophie Germain prime.

Together with 13432520263, it forms a pair of twin primes.

It is a Chen 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 (13432520263) by changing a digit.

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 as a sum of consecutive naturals, namely, 6716260130 + 6716260131.

It is an arithmetic number, because the mean of its divisors is an integer number (6716260131).

Almost surely, 2^13432520261 is an apocalyptic number.

It is an amenable number.

13432520261 is a deficient number, since it is larger than the sum of its proper divisors (1).

13432520261 is an equidigital number, since it uses as much as digits as its factorization.

13432520261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 29.

The spelling of 13432520261 in words is "thirteen billion, four hundred thirty-two million, five hundred twenty thousand, two hundred sixty-one".