13145143566 has 16 divisors (see below), whose sum is σ = 26292554064. Its totient is φ = 4381336704.

The previous prime is 13145143547. The next prime is 13145143603. The reversal of 13145143566 is 66534154131.

13145143566 is digitally balanced in base 2 and base 5, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 13771 + ... + 162726.

It is an arithmetic number, because the mean of its divisors is an integer number (1643284629).

Almost surely, 2^13145143566 is an apocalyptic number.

13145143566 is an abundant number, since it is smaller than the sum of its proper divisors (13147410498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13145143566 is a wasteful number, since it uses less digits than its factorization.

13145143566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188915.

The product of its digits is 129600, while the sum is 39.

Adding to 13145143566 its reverse (66534154131), we get a palindrome (79679297697).

The spelling of 13145143566 in words is "thirteen billion, one hundred forty-five million, one hundred forty-three thousand, five hundred sixty-six".