13521530879 has 2 divisors, whose sum is σ = 13521530880. Its totient is φ = 13521530878.

The previous prime is 13521530837. The next prime is 13521530903. The reversal of 13521530879 is 97803512531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13521530879 - 2¹² = 13521526783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13521530579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6760765439 + 6760765440.

It is an arithmetic number, because the mean of its divisors is an integer number (6760765440).

Almost surely, 2^13521530879 is an apocalyptic number.

13521530879 is a deficient number, since it is larger than the sum of its proper divisors (1).

13521530879 is an equidigital number, since it uses as much as digits as its factorization.

13521530879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 226800, while the sum is 44.

The spelling of 13521530879 in words is "thirteen billion, five hundred twenty-one million, five hundred thirty thousand, eight hundred seventy-nine".