16720665522027 has 8 divisors (see below), whose sum is σ = 22294272627264. Its totient is φ = 11147084382408.

The previous prime is 16720665522019. The next prime is 16720665522059. The reversal of 16720665522027 is 72022556602761.

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

It is not a de Polignac number, because 16720665522027 - 2³ = 16720665522019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16720665522427) 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, 4935573 + ... + 7602710.

It is an arithmetic number, because the mean of its divisors is an integer number (2786784078408).

Almost surely, 2^{16720665522027} is an apocalyptic number.

16720665522027 is a deficient number, since it is larger than the sum of its proper divisors (5573607105237).

16720665522027 is a wasteful number, since it uses less digits than its factorization.

16720665522027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12982809.

The product of its (nonzero) digits is 4233600, while the sum is 51.

The spelling of 16720665522027 in words is "sixteen trillion, seven hundred twenty billion, six hundred sixty-five million, five hundred twenty-two thousand, twenty-seven".