13438345605 has 16 divisors (see below), whose sum is σ = 21702302784. Its totient is φ = 7100134400.

The previous prime is 13438345603. The next prime is 13438345619. The reversal of 13438345605 is 50654383431.

It is not a de Polignac number, because 13438345605 - 2¹ = 13438345603 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 (13438345601) 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, 4184796 + ... + 4188005.

It is an arithmetic number, because the mean of its divisors is an integer number (1356393924).

Almost surely, 2^13438345605 is an apocalyptic number.

13438345605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13438345605 is a deficient number, since it is larger than the sum of its proper divisors (8263957179).

13438345605 is a wasteful number, since it uses less digits than its factorization.

13438345605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8372916.

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 13438345605 in words is "thirteen billion, four hundred thirty-eight million, three hundred forty-five thousand, six hundred five".