16635720073047 has 16 divisors (see below), whose sum is σ = 23146034334720. Its totient is φ = 10607971457952.

The previous prime is 16635720072989. The next prime is 16635720073057. The reversal of 16635720073047 is 74037002753661.

It is not a de Polignac number, because 16635720073047 - 2¹¹ = 16635720070999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16635720073057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1205272 + ... + 5892717.

It is an arithmetic number, because the mean of its divisors is an integer number (1446627145920).

Almost surely, 2^{16635720073047} is an apocalyptic number.

16635720073047 is a deficient number, since it is larger than the sum of its proper divisors (6510314261673).

16635720073047 is a wasteful number, since it uses less digits than its factorization.

16635720073047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7131982.

The product of its (nonzero) digits is 4445280, while the sum is 51.

The spelling of 16635720073047 in words is "sixteen trillion, six hundred thirty-five billion, seven hundred twenty million, seventy-three thousand, forty-seven".