13112420565 has 16 divisors (see below), whose sum is σ = 21546897408. Its totient is φ = 6804282816.

The previous prime is 13112420483. The next prime is 13112420591. The reversal of 13112420565 is 56502421131.

It is not a de Polignac number, because 13112420565 - 2⁸ = 13112420309 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11812437 + ... + 11813546.

It is an arithmetic number, because the mean of its divisors is an integer number (1346681088).

Almost surely, 2^13112420565 is an apocalyptic number.

13112420565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13112420565 is a deficient number, since it is larger than the sum of its proper divisors (8434476843).

13112420565 is a wasteful number, since it uses less digits than its factorization.

13112420565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23626028.

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 13112420565 its reverse (56502421131), we get a palindrome (69614841696).

The spelling of 13112420565 in words is "thirteen billion, one hundred twelve million, four hundred twenty thousand, five hundred sixty-five".