1326610602601 has 4 divisors (see below), whose sum is σ = 1358966958804. Its totient is φ = 1294254246400.

The previous prime is 1326610602593. The next prime is 1326610602649. The reversal of 1326610602601 is 1062060166231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 164474858025 + 1162135744576 = 405555^2 + 1078024^2 .

It is a cyclic number.

It is not a de Polignac number, because 1326610602601 - 2³ = 1326610602593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1326610602661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16178178040 + ... + 16178178121.

It is an arithmetic number, because the mean of its divisors is an integer number (339741739701).

Almost surely, 2^{1326610602601} is an apocalyptic number.

It is an amenable number.

1326610602601 is a deficient number, since it is larger than the sum of its proper divisors (32356356203).

1326610602601 is an equidigital number, since it uses as much as digits as its factorization.

1326610602601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32356356202.

The product of its (nonzero) digits is 15552, while the sum is 34.

Adding to 1326610602601 its reverse (1062060166231), we get a palindrome (2388670768832).

The spelling of 1326610602601 in words is "one trillion, three hundred twenty-six billion, six hundred ten million, six hundred two thousand, six hundred one".