13381122066 has 64 divisors (see below), whose sum is σ = 29260949760. Its totient is φ = 4054579200.

The previous prime is 13381122043. The next prime is 13381122103. The reversal of 13381122066 is 66022118331.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4775866 + ... + 4778666.

It is an arithmetic number, because the mean of its divisors is an integer number (457202340).

Almost surely, 2^13381122066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13381122066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14630474880).

13381122066 is an abundant number, since it is smaller than the sum of its proper divisors (15879827694).

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

13381122066 is a wasteful number, since it uses less digits than its factorization.

13381122066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3731.

The product of its (nonzero) digits is 10368, while the sum is 33.

The spelling of 13381122066 in words is "thirteen billion, three hundred eighty-one million, one hundred twenty-two thousand, sixty-six".