13406406065 has 16 divisors (see below), whose sum is σ = 17380935936. Its totient is φ = 9868267200.

The previous prime is 13406406049. The next prime is 13406406067. The reversal of 13406406065 is 56060460431.

13406406065 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 13406406065 - 2⁴ = 13406406049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13406406067) 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, 311381 + ... + 351810.

It is an arithmetic number, because the mean of its divisors is an integer number (1086308496).

Almost surely, 2^13406406065 is an apocalyptic number.

It is an amenable number.

13406406065 is a deficient number, since it is larger than the sum of its proper divisors (3974529871).

13406406065 is a wasteful number, since it uses less digits than its factorization.

13406406065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663520.

The product of its (nonzero) digits is 51840, while the sum is 35.

Adding to 13406406065 its reverse (56060460431), we get a palindrome (69466866496).

The spelling of 13406406065 in words is "thirteen billion, four hundred six million, four hundred six thousand, sixty-five".