16720427501747 has 8 divisors (see below), whose sum is σ = 16736023640160. Its totient is φ = 16704831911040.

The previous prime is 16720427501737. The next prime is 16720427501773. The reversal of 16720427501747 is 74710572402761.

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

It is a cyclic number.

It is not a de Polignac number, because 16720427501747 - 2¹⁰ = 16720427500723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16720427501717) 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, 86161547 + ... + 86355387.

It is an arithmetic number, because the mean of its divisors is an integer number (2092002955020).

Almost surely, 2^{16720427501747} is an apocalyptic number.

16720427501747 is a deficient number, since it is larger than the sum of its proper divisors (15596138413).

16720427501747 is a wasteful number, since it uses less digits than its factorization.

16720427501747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273853.

The product of its (nonzero) digits is 4609920, while the sum is 53.

The spelling of 16720427501747 in words is "sixteen trillion, seven hundred twenty billion, four hundred twenty-seven million, five hundred one thousand, seven hundred forty-seven".