12365205011365 has 8 divisors (see below), whose sum is σ = 14901929474328. Its totient is φ = 9849708368640.

The previous prime is 12365205011321. The next prime is 12365205011381. The reversal of 12365205011365 is 56311050256321.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10029221316 + 12355175790049 = 100146^2 + 3514993^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12365205011365 - 2²⁷ = 12365070793637 is a prime.

It is a super-2 number, since 2×12365205011365² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5306953776 + ... + 5306956105.

It is an arithmetic number, because the mean of its divisors is an integer number (1862741184291).

Almost surely, 2^{12365205011365} is an apocalyptic number.

It is an amenable number.

12365205011365 is a deficient number, since it is larger than the sum of its proper divisors (2536724462963).

12365205011365 is a wasteful number, since it uses less digits than its factorization.

12365205011365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10613910119.

The product of its (nonzero) digits is 162000, while the sum is 40.

Adding to 12365205011365 its reverse (56311050256321), we get a palindrome (68676255267686).

The spelling of 12365205011365 in words is "twelve trillion, three hundred sixty-five billion, two hundred five million, eleven thousand, three hundred sixty-five".