1320435065401 has 4 divisors (see below), whose sum is σ = 1334047798132. Its totient is φ = 1306822332672.

The previous prime is 1320435065393. The next prime is 1320435065407. The reversal of 1320435065401 is 1045605340231.

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 595852767225 + 724582298176 = 771915^2 + 851224^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320435065401 - 2³ = 1320435065393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320435065407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6806366220 + ... + 6806366413.

It is an arithmetic number, because the mean of its divisors is an integer number (333511949533).

Almost surely, 2^{1320435065401} is an apocalyptic number.

It is an amenable number.

1320435065401 is a deficient number, since it is larger than the sum of its proper divisors (13612732731).

1320435065401 is an equidigital number, since it uses as much as digits as its factorization.

1320435065401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13612732730.

The product of its (nonzero) digits is 43200, while the sum is 34.

The spelling of 1320435065401 in words is "one trillion, three hundred twenty billion, four hundred thirty-five million, sixty-five thousand, four hundred one".