19726858475853 has 8 divisors (see below), whose sum is σ = 26463842863968. Its totient is φ = 13070556535824.

The previous prime is 19726858475813. The next prime is 19726858475887. The reversal of 19726858475853 is 35857485862791.

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

It is not a de Polignac number, because 19726858475853 - 2¹³ = 19726858467661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19726858475813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20170611450 + ... + 20170612427.

It is an arithmetic number, because the mean of its divisors is an integer number (3307980357996).

Almost surely, 2^{19726858475853} is an apocalyptic number.

It is an amenable number.

19726858475853 is a deficient number, since it is larger than the sum of its proper divisors (6736984388115).

19726858475853 is a wasteful number, since it uses less digits than its factorization.

19726858475853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40341224043.

The product of its digits is 4064256000, while the sum is 78.

The spelling of 19726858475853 in words is "nineteen trillion, seven hundred twenty-six billion, eight hundred fifty-eight million, four hundred seventy-five thousand, eight hundred fifty-three".