19421724113 has 8 divisors (see below), whose sum is σ = 21188454336. Its totient is φ = 17655180400.

The previous prime is 19421724109. The next prime is 19421724121. The reversal of 19421724113 is 31142712491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19421724113 - 2² = 19421724109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19421724143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257243 + ... + 324063.

It is an arithmetic number, because the mean of its divisors is an integer number (2648556792).

Almost surely, 2^19421724113 is an apocalyptic number.

It is an amenable number.

19421724113 is a deficient number, since it is larger than the sum of its proper divisors (1766730223).

19421724113 is a wasteful number, since it uses less digits than its factorization.

19421724113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93255.

The product of its digits is 12096, while the sum is 35.

The spelling of 19421724113 in words is "nineteen billion, four hundred twenty-one million, seven hundred twenty-four thousand, one hundred thirteen".