130521232409 has 2 divisors, whose sum is σ = 130521232410. Its totient is φ = 130521232408.

The previous prime is 130521232399. The next prime is 130521232411. The reversal of 130521232409 is 904232125031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67014712384 + 63506520025 = 258872^2 + 252005^2 .

It is an emirp because it is prime and its reverse (904232125031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 130521232409 - 2¹⁶ = 130521166873 is a prime.

Together with 130521232411, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (130521231409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65260616204 + 65260616205.

It is an arithmetic number, because the mean of its divisors is an integer number (65260616205).

Almost surely, 2^130521232409 is an apocalyptic number.

It is an amenable number.

130521232409 is a deficient number, since it is larger than the sum of its proper divisors (1).

130521232409 is an equidigital number, since it uses as much as digits as its factorization.

130521232409 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 130521232409 in words is "one hundred thirty billion, five hundred twenty-one million, two hundred thirty-two thousand, four hundred nine".