19506608836459 has 2 divisors, whose sum is σ = 19506608836460. Its totient is φ = 19506608836458.

The previous prime is 19506608836397. The next prime is 19506608836483. The reversal of 19506608836459 is 95463880660591.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19506608836459 is a prime.

It is not a weakly prime, because it can be changed into another prime (19506608836159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9753304418229 + 9753304418230.

It is an arithmetic number, because the mean of its divisors is an integer number (9753304418230).

Almost surely, 2^{19506608836459} is an apocalyptic number.

19506608836459 is a deficient number, since it is larger than the sum of its proper divisors (1).

19506608836459 is an equidigital number, since it uses as much as digits as its factorization.

19506608836459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 335923200, while the sum is 70.

The spelling of 19506608836459 in words is "nineteen trillion, five hundred six billion, six hundred eight million, eight hundred thirty-six thousand, four hundred fifty-nine".