19684394421713 has 24 divisors (see below), whose sum is σ = 22966420720320. Its totient is φ = 16822098105120.

The previous prime is 19684394421701. The next prime is 19684394421743. The reversal of 19684394421713 is 31712449348691.

It is not a de Polignac number, because 19684394421713 - 2¹⁸ = 19684394159569 is a prime.

It is a hoax number, since the sum of its digits (62) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (19684394421743) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34475828 + ... + 35042138.

It is an arithmetic number, because the mean of its divisors is an integer number (956934196680).

Almost surely, 2^{19684394421713} is an apocalyptic number.

It is an amenable number.

19684394421713 is a deficient number, since it is larger than the sum of its proper divisors (3282026298607).

19684394421713 is a wasteful number, since it uses less digits than its factorization.

19684394421713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568437 (or 568430 counting only the distinct ones).

The product of its digits is 31352832, while the sum is 62.

The spelling of 19684394421713 in words is "nineteen trillion, six hundred eighty-four billion, three hundred ninety-four million, four hundred twenty-one thousand, seven hundred thirteen".