19829820717 has 48 divisors (see below), whose sum is σ = 32972179968. Its totient is φ = 11249521920.

The previous prime is 19829820641. The next prime is 19829820719. The reversal of 19829820717 is 71702892891.

It is not a de Polignac number, because 19829820717 - 2¹¹ = 19829818669 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19829820719) 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 47 ways as a sum of consecutive naturals, for example, 5185068 + ... + 5188890.

It is an arithmetic number, because the mean of its divisors is an integer number (686920416).

Almost surely, 2^19829820717 is an apocalyptic number.

It is an amenable number.

19829820717 is a deficient number, since it is larger than the sum of its proper divisors (13142359251).

19829820717 is a wasteful number, since it uses less digits than its factorization.

19829820717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4410 (or 4407 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 54.

The spelling of 19829820717 in words is "nineteen billion, eight hundred twenty-nine million, eight hundred twenty thousand, seven hundred seventeen".