19926205047 has 48 divisors (see below), whose sum is σ = 33082583040. Its totient is φ = 11321349696.

The previous prime is 19926205037. The next prime is 19926205063. The reversal of 19926205047 is 74050262991.

19926205047 is a `hidden beast` number, since 19 + 9 + 2 + 620 + 5 + 0 + 4 + 7 = 666.

It is not a de Polignac number, because 19926205047 - 2⁶ = 19926204983 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19926204993 and 19926205011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19926205007) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9565068 + ... + 9567150.

It is an arithmetic number, because the mean of its divisors is an integer number (689220480).

Almost surely, 2^19926205047 is an apocalyptic number.

19926205047 is a deficient number, since it is larger than the sum of its proper divisors (13156377993).

19926205047 is a wasteful number, since it uses less digits than its factorization.

19926205047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2892 (or 2889 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 19926205047 in words is "nineteen billion, nine hundred twenty-six million, two hundred five thousand, forty-seven".