16461533222213 has 8 divisors (see below), whose sum is σ = 16493726255832. Its totient is φ = 16429349648896.

The previous prime is 16461533222209. The next prime is 16461533222297. The reversal of 16461533222213 is 31222233516461.

It can be written as a sum of positive squares in 4 ways, for example, as 5658465835009 + 10803067387204 = 2378753^2 + 3286802^2 .

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 16461533222213 - 2² = 16461533222209 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16461533222513) 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, 1123481 + ... + 5846817.

It is an arithmetic number, because the mean of its divisors is an integer number (2061715781979).

Almost surely, 2^{16461533222213} is an apocalyptic number.

It is an amenable number.

16461533222213 is a deficient number, since it is larger than the sum of its proper divisors (32193033619).

16461533222213 is an equidigital number, since it uses as much as digits as its factorization.

16461533222213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4730151.

The product of its digits is 311040, while the sum is 41.

Adding to 16461533222213 its reverse (31222233516461), we get a palindrome (47683766738674).

The spelling of 16461533222213 in words is "sixteen trillion, four hundred sixty-one billion, five hundred thirty-three million, two hundred twenty-two thousand, two hundred thirteen".