16221365362 has 4 divisors (see below), whose sum is σ = 24332048046. Its totient is φ = 8110682680.

The previous prime is 16221365327. The next prime is 16221365429. The reversal of 16221365362 is 26356312261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 26356312261 = 14759 ⋅1785779.

It can be written as a sum of positive squares in only one way, i.e., 16030345321 + 191020041 = 126611^2 + 13821^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4055341339 + ... + 4055341342.

Almost surely, 2^16221365362 is an apocalyptic number.

16221365362 is a deficient number, since it is larger than the sum of its proper divisors (8110682684).

16221365362 is an equidigital number, since it uses as much as digits as its factorization.

16221365362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8110682683.

The product of its digits is 77760, while the sum is 37.

The spelling of 16221365362 in words is "sixteen billion, two hundred twenty-one million, three hundred sixty-five thousand, three hundred sixty-two".