206544413367451 has 2 divisors, whose sum is σ = 206544413367452. Its totient is φ = 206544413367450.

The previous prime is 206544413367361. The next prime is 206544413367463. The reversal of 206544413367451 is 154763314445602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 206544413367451 - 2¹⁹ = 206544412843163 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 206544413367392 and 206544413367401.

It is not a weakly prime, because it can be changed into another prime (206544413367251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103272206683725 + 103272206683726.

It is an arithmetic number, because the mean of its divisors is an integer number (103272206683726).

Almost surely, 2^{206544413367451} is an apocalyptic number.

206544413367451 is a deficient number, since it is larger than the sum of its proper divisors (1).

206544413367451 is an equidigital number, since it uses as much as digits as its factorization.

206544413367451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29030400, while the sum is 55.

The spelling of 206544413367451 in words is "two hundred six trillion, five hundred forty-four billion, four hundred thirteen million, three hundred sixty-seven thousand, four hundred fifty-one".