206220005345479 has 2 divisors, whose sum is σ = 206220005345480. Its totient is φ = 206220005345478.

The previous prime is 206220005345429. The next prime is 206220005345507. The reversal of 206220005345479 is 974543500022602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 206220005345479 - 2²⁵ = 206219971791047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206220005345429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103110002672739 + 103110002672740.

It is an arithmetic number, because the mean of its divisors is an integer number (103110002672740).

Almost surely, 2^{206220005345479} is an apocalyptic number.

206220005345479 is a deficient number, since it is larger than the sum of its proper divisors (1).

206220005345479 is an equidigital number, since it uses as much as digits as its factorization.

206220005345479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3628800, while the sum is 49.

The spelling of 206220005345479 in words is "two hundred six trillion, two hundred twenty billion, five million, three hundred forty-five thousand, four hundred seventy-nine".