216422061613 has 2 divisors, whose sum is σ = 216422061614. Its totient is φ = 216422061612.

The previous prime is 216422061607. The next prime is 216422061641. The reversal of 216422061613 is 316160224612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210793010884 + 5629050729 = 459122^2 + 75027^2 .

It is a cyclic number.

It is not a de Polignac number, because 216422061613 - 2¹⁷ = 216421930541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216422061673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108211030806 + 108211030807.

It is an arithmetic number, because the mean of its divisors is an integer number (108211030807).

Almost surely, 2^216422061613 is an apocalyptic number.

It is an amenable number.

216422061613 is a deficient number, since it is larger than the sum of its proper divisors (1).

216422061613 is an equidigital number, since it uses as much as digits as its factorization.

216422061613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 34.

The spelling of 216422061613 in words is "two hundred sixteen billion, four hundred twenty-two million, sixty-one thousand, six hundred thirteen".