12663215251365 has 32 divisors (see below), whose sum is σ = 23161251753216. Its totient is φ = 5787483863040.

The previous prime is 12663215251363. The next prime is 12663215251387. The reversal of 12663215251365 is 56315251236621.

12663215251365 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12663215251365 - 2¹ = 12663215251363 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12663215251363) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14302956 + ... + 15162485.

It is an arithmetic number, because the mean of its divisors is an integer number (723789117288).

Almost surely, 2^{12663215251365} is an apocalyptic number.

12663215251365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12663215251365 is a deficient number, since it is larger than the sum of its proper divisors (10498036501851).

12663215251365 is a wasteful number, since it uses less digits than its factorization.

12663215251365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29469549.

The product of its digits is 1944000, while the sum is 48.

Adding to 12663215251365 its reverse (56315251236621), we get a palindrome (68978466487986).

The spelling of 12663215251365 in words is "twelve trillion, six hundred sixty-three billion, two hundred fifteen million, two hundred fifty-one thousand, three hundred sixty-five".