13604362615819 has 4 divisors (see below), whose sum is σ = 13608798341944. Its totient is φ = 13599926889696.

The previous prime is 13604362615673. The next prime is 13604362615847. The reversal of 13604362615819 is 91851626340631.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13604362615819 - 2⁹ = 13604362615307 is a prime.

It is a super-2 number, since 2×13604362615819² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13604362615819.

It is not an unprimeable number, because it can be changed into a prime (13604362615889) 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 in 3 ways as a sum of consecutive naturals, for example, 2217858462 + ... + 2217864595.

It is an arithmetic number, because the mean of its divisors is an integer number (3402199585486).

Almost surely, 2^{13604362615819} is an apocalyptic number.

13604362615819 is a deficient number, since it is larger than the sum of its proper divisors (4435726125).

13604362615819 is an equidigital number, since it uses as much as digits as its factorization.

13604362615819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4435726124.

The product of its (nonzero) digits is 5598720, while the sum is 55.

The spelling of 13604362615819 in words is "thirteen trillion, six hundred four billion, three hundred sixty-two million, six hundred fifteen thousand, eight hundred nineteen".