206646362431 has 2 divisors, whose sum is σ = 206646362432. Its totient is φ = 206646362430.

The previous prime is 206646362411. The next prime is 206646362467. The reversal of 206646362431 is 134263646602.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 206646362431 - 2⁵ = 206646362399 is a prime.

It is a super-2 number, since 2×206646362431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206646362411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103323181215 + 103323181216.

It is an arithmetic number, because the mean of its divisors is an integer number (103323181216).

Almost surely, 2^206646362431 is an apocalyptic number.

206646362431 is a deficient number, since it is larger than the sum of its proper divisors (1).

206646362431 is an equidigital number, since it uses as much as digits as its factorization.

206646362431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 746496, while the sum is 43.

The spelling of 206646362431 in words is "two hundred six billion, six hundred forty-six million, three hundred sixty-two thousand, four hundred thirty-one".