16722106451 has 4 divisors (see below), whose sum is σ = 17174055312. Its totient is φ = 16270157592.

The previous prime is 16722106439. The next prime is 16722106523. The reversal of 16722106451 is 15460122761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15460122761 = 59 ⋅262035979.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16722106451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16722103451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225974375 + ... + 225974448.

It is an arithmetic number, because the mean of its divisors is an integer number (4293513828).

Almost surely, 2^16722106451 is an apocalyptic number.

16722106451 is a deficient number, since it is larger than the sum of its proper divisors (451948861).

16722106451 is an equidigital number, since it uses as much as digits as its factorization.

16722106451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451948860.

The product of its (nonzero) digits is 20160, while the sum is 35.

The spelling of 16722106451 in words is "sixteen billion, seven hundred twenty-two million, one hundred six thousand, four hundred fifty-one".