19816704735009 has 32 divisors (see below), whose sum is σ = 33568743849984. Its totient is φ = 10115581285440.

The previous prime is 19816704734993. The next prime is 19816704735029. The reversal of 19816704735009 is 90053740761891.

It is not a de Polignac number, because 19816704735009 - 2⁴ = 19816704734993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19816704735029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1170776409 + ... + 1170793334.

It is an arithmetic number, because the mean of its divisors is an integer number (1049023245312).

Almost surely, 2^{19816704735009} is an apocalyptic number.

It is an amenable number.

19816704735009 is a deficient number, since it is larger than the sum of its proper divisors (13752039114975).

19816704735009 is a wasteful number, since it uses less digits than its factorization.

19816704735009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2341569797.

The product of its (nonzero) digits is 11430720, while the sum is 60.

The spelling of 19816704735009 in words is "nineteen trillion, eight hundred sixteen billion, seven hundred four million, seven hundred thirty-five thousand, nine".