1065620104013 has 4 divisors (see below), whose sum is σ = 1083089286108. Its totient is φ = 1048150921920.

The previous prime is 1065620104009. The next prime is 1065620104063. The reversal of 1065620104013 is 3104010265601.

It is a happy number.

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 221108729284 + 844511374729 = 470222^2 + 918973^2 .

It is a cyclic number.

It is not a de Polignac number, because 1065620104013 - 2² = 1065620104009 is a prime.

It is a super-2 number, since 2×1065620104013² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1065620104063) 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, 8734590956 + ... + 8734591077.

It is an arithmetic number, because the mean of its divisors is an integer number (270772321527).

Almost surely, 2^{1065620104013} is an apocalyptic number.

It is an amenable number.

1065620104013 is a deficient number, since it is larger than the sum of its proper divisors (17469182095).

1065620104013 is an equidigital number, since it uses as much as digits as its factorization.

1065620104013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17469182094.

The product of its (nonzero) digits is 4320, while the sum is 29.

Adding to 1065620104013 its reverse (3104010265601), we get a palindrome (4169630369614).

The spelling of 1065620104013 in words is "one trillion, sixty-five billion, six hundred twenty million, one hundred four thousand, thirteen".