19473821313113 has 4 divisors (see below), whose sum is σ = 20000140808100. Its totient is φ = 18947501818128.

The previous prime is 19473821313097. The next prime is 19473821313139. The reversal of 19473821313113 is 31131312837491.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15668637639769 + 3805183673344 = 3958363^2 + 1950688^2 .

It is a cyclic number.

It is not a de Polignac number, because 19473821313113 - 2⁴ = 19473821313097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (19473821318113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263159747438 + ... + 263159747511.

It is an arithmetic number, because the mean of its divisors is an integer number (5000035202025).

Almost surely, 2^{19473821313113} is an apocalyptic number.

It is an amenable number.

19473821313113 is a deficient number, since it is larger than the sum of its proper divisors (526319494987).

19473821313113 is an equidigital number, since it uses as much as digits as its factorization.

19473821313113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526319494986.

The product of its digits is 326592, while the sum is 47.

The spelling of 19473821313113 in words is "nineteen trillion, four hundred seventy-three billion, eight hundred twenty-one million, three hundred thirteen thousand, one hundred thirteen".