13276566645 has 16 divisors (see below), whose sum is σ = 21295490112. Its totient is φ = 7063174400.

The previous prime is 13276566643. The next prime is 13276566671. The reversal of 13276566645 is 54666567231.

13276566645 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 13276566645 - 2¹ = 13276566643 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13276566643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1097607 + ... + 1109636.

It is an arithmetic number, because the mean of its divisors is an integer number (1330968132).

Almost surely, 2^13276566645 is an apocalyptic number.

13276566645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13276566645 is a deficient number, since it is larger than the sum of its proper divisors (8018923467).

13276566645 is a wasteful number, since it uses less digits than its factorization.

13276566645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2207652.

The product of its digits is 5443200, while the sum is 51.

The spelling of 13276566645 in words is "thirteen billion, two hundred seventy-six million, five hundred sixty-six thousand, six hundred forty-five".