16620016576497 has 8 divisors (see below), whose sum is σ = 22162019804544. Its totient is φ = 11079012199728.

The previous prime is 16620016576447. The next prime is 16620016576531. The reversal of 16620016576497 is 79467561002661.

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

It is not a de Polignac number, because 16620016576497 - 2¹⁹ = 16620016052209 is a prime.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 16620016576497.

It is not an unprimeable number, because it can be changed into a prime (16620016576447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249673993 + ... + 249740550.

It is an arithmetic number, because the mean of its divisors is an integer number (2770252475568).

Almost surely, 2^{16620016576497} is an apocalyptic number.

It is an amenable number.

16620016576497 is a deficient number, since it is larger than the sum of its proper divisors (5542003228047).

16620016576497 is a wasteful number, since it uses less digits than its factorization.

16620016576497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499425639.

The product of its (nonzero) digits is 22861440, while the sum is 60.

The spelling of 16620016576497 in words is "sixteen trillion, six hundred twenty billion, sixteen million, five hundred seventy-six thousand, four hundred ninety-seven".