13445505331209 has 24 divisors (see below), whose sum is σ = 22196256680832. Its totient is φ = 7682972186880.

The previous prime is 13445505331207. The next prime is 13445505331211. The reversal of 13445505331209 is 90213350554431.

13445505331209 is a `hidden beast` number, since 1 + 3 + 4 + 45 + 50 + 533 + 1 + 20 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (13445505331207) and next prime (13445505331211).

It is not a de Polignac number, because 13445505331209 - 2¹ = 13445505331207 is a prime.

It is a super-2 number, since 2×13445505331209² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13445505331207) 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 23 ways as a sum of consecutive naturals, for example, 421972 + ... + 5202794.

It is an arithmetic number, because the mean of its divisors is an integer number (924844028368).

Almost surely, 2^{13445505331209} is an apocalyptic number.

It is an amenable number.

13445505331209 is a deficient number, since it is larger than the sum of its proper divisors (8750751349623).

13445505331209 is a wasteful number, since it uses less digits than its factorization.

13445505331209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4825477 (or 4825474 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 45.

The spelling of 13445505331209 in words is "thirteen trillion, four hundred forty-five billion, five hundred five million, three hundred thirty-one thousand, two hundred nine".