1596661266601 has 2 divisors, whose sum is σ = 1596661266602. Its totient is φ = 1596661266600.

The previous prime is 1596661266589. The next prime is 1596661266647. The reversal of 1596661266601 is 1066621666951.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1481390831376 + 115270435225 = 1217124^2 + 339515^2 .

It is a cyclic number.

It is not a de Polignac number, because 1596661266601 - 2⁹ = 1596661266089 is a prime.

It is not a weakly prime, because it can be changed into another prime (1596661266661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 798330633300 + 798330633301.

It is an arithmetic number, because the mean of its divisors is an integer number (798330633301).

Almost surely, 2^{1596661266601} is an apocalyptic number.

It is an amenable number.

1596661266601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1596661266601 is an equidigital number, since it uses as much as digits as its factorization.

1596661266601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4199040, while the sum is 55.

The spelling of 1596661266601 in words is "one trillion, five hundred ninety-six billion, six hundred sixty-one million, two hundred sixty-six thousand, six hundred one".