13521619459 has 2 divisors, whose sum is σ = 13521619460. Its totient is φ = 13521619458.

The previous prime is 13521619421. The next prime is 13521619471. The reversal of 13521619459 is 95491612531.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13521619459 - 2¹¹ = 13521617411 is a prime.

It is not a weakly prime, because it can be changed into another prime (13521619259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6760809729 + 6760809730.

It is an arithmetic number, because the mean of its divisors is an integer number (6760809730).

Almost surely, 2^13521619459 is an apocalyptic number.

13521619459 is a deficient number, since it is larger than the sum of its proper divisors (1).

13521619459 is an equidigital number, since it uses as much as digits as its factorization.

13521619459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 291600, while the sum is 46.

The spelling of 13521619459 in words is "thirteen billion, five hundred twenty-one million, six hundred nineteen thousand, four hundred fifty-nine".