16213364262461 has 2 divisors, whose sum is σ = 16213364262462. Its totient is φ = 16213364262460.

The previous prime is 16213364262419. The next prime is 16213364262463. The reversal of 16213364262461 is 16426246331261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9296516862361 + 6916847400100 = 3049019^2 + 2629990^2 .

It is a cyclic number.

It is not a de Polignac number, because 16213364262461 - 2⁶ = 16213364262397 is a prime.

Together with 16213364262463, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16213364262463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8106682131230 + 8106682131231.

It is an arithmetic number, because the mean of its divisors is an integer number (8106682131231).

Almost surely, 2^{16213364262461} is an apocalyptic number.

It is an amenable number.

16213364262461 is a deficient number, since it is larger than the sum of its proper divisors (1).

16213364262461 is an equidigital number, since it uses as much as digits as its factorization.

16213364262461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1492992, while the sum is 47.

The spelling of 16213364262461 in words is "sixteen trillion, two hundred thirteen billion, three hundred sixty-four million, two hundred sixty-two thousand, four hundred sixty-one".