16562645122 has 4 divisors (see below), whose sum is σ = 24843967686. Its totient is φ = 8281322560.

The previous prime is 16562645117. The next prime is 16562645147. The reversal of 16562645122 is 22154626561.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 14725579801 + 1837065321 = 121349^2 + 42861^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4140661279 + ... + 4140661282.

Almost surely, 2^16562645122 is an apocalyptic number.

16562645122 is a deficient number, since it is larger than the sum of its proper divisors (8281322564).

16562645122 is an equidigital number, since it uses as much as digits as its factorization.

16562645122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8281322563.

The product of its digits is 172800, while the sum is 40.

The spelling of 16562645122 in words is "sixteen billion, five hundred sixty-two million, six hundred forty-five thousand, one hundred twenty-two".