13266053565 has 16 divisors (see below), whose sum is σ = 21435843456. Its totient is φ = 7005176000.

The previous prime is 13266053557. The next prime is 13266053569. The reversal of 13266053565 is 56535066231.

It is not a de Polignac number, because 13266053565 - 2³ = 13266053557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13266053569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4376721 + ... + 4379750.

It is an arithmetic number, because the mean of its divisors is an integer number (1339740216).

Almost surely, 2^13266053565 is an apocalyptic number.

13266053565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13266053565 is a deficient number, since it is larger than the sum of its proper divisors (8169789891).

13266053565 is a wasteful number, since it uses less digits than its factorization.

13266053565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8756580.

The product of its (nonzero) digits is 486000, while the sum is 42.

The spelling of 13266053565 in words is "thirteen billion, two hundred sixty-six million, fifty-three thousand, five hundred sixty-five".