13267408505365 has 24 divisors (see below), whose sum is σ = 18599705219160. Its totient is φ = 9058605792768.

The previous prime is 13267408505321. The next prime is 13267408505383. The reversal of 13267408505365 is 56350580476231.

It can be written as a sum of positive squares in 4 ways, for example, as 2933331013809 + 10334077491556 = 1712697^2 + 3214666^2 .

It is not a de Polignac number, because 13267408505365 - 2¹¹ = 13267408503317 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116150400 + ... + 116264569.

It is an arithmetic number, because the mean of its divisors is an integer number (774987717465).

Almost surely, 2^{13267408505365} is an apocalyptic number.

It is an amenable number.

13267408505365 is a deficient number, since it is larger than the sum of its proper divisors (5332296713795).

13267408505365 is a wasteful number, since it uses less digits than its factorization.

13267408505365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232415221 (or 232415214 counting only the distinct ones).

The product of its (nonzero) digits is 18144000, while the sum is 55.

The spelling of 13267408505365 in words is "thirteen trillion, two hundred sixty-seven billion, four hundred eight million, five hundred five thousand, three hundred sixty-five".