1647232659109 has 2 divisors, whose sum is σ = 1647232659110. Its totient is φ = 1647232659108.

The previous prime is 1647232659019. The next prime is 1647232659113. The reversal of 1647232659109 is 9019562327461.

Together with previous prime (1647232659019) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1561445178084 + 85787481025 = 1249578^2 + 292895^2 .

It is a cyclic number.

It is not a de Polignac number, because 1647232659109 - 2¹¹ = 1647232657061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1647232659109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1647232659139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 823616329554 + 823616329555.

It is an arithmetic number, because the mean of its divisors is an integer number (823616329555).

Almost surely, 2^{1647232659109} is an apocalyptic number.

It is an amenable number.

1647232659109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1647232659109 is an equidigital number, since it uses as much as digits as its factorization.

1647232659109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4898880, while the sum is 55.

The spelling of 1647232659109 in words is "one trillion, six hundred forty-seven billion, two hundred thirty-two million, six hundred fifty-nine thousand, one hundred nine".