16628821224693 has 8 divisors (see below), whose sum is σ = 22438891291488. Its totient is φ = 10952315987184.

The previous prime is 16628821224671. The next prime is 16628821224707. The reversal of 16628821224693 is 39642212882661.

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

It is not a de Polignac number, because 16628821224693 - 2¹² = 16628821220597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16628821224623) 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, 33391207030 + ... + 33391207527.

It is an arithmetic number, because the mean of its divisors is an integer number (2804861411436).

Almost surely, 2^{16628821224693} is an apocalyptic number.

It is an amenable number.

16628821224693 is a deficient number, since it is larger than the sum of its proper divisors (5810070066795).

16628821224693 is an equidigital number, since it uses as much as digits as its factorization.

16628821224693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66782414643.

The product of its digits is 23887872, while the sum is 60.

The spelling of 16628821224693 in words is "sixteen trillion, six hundred twenty-eight billion, eight hundred twenty-one million, two hundred twenty-four thousand, six hundred ninety-three".