13144666356 has 72 divisors (see below), whose sum is σ = 35328908160. Its totient is φ = 4106516736.

The previous prime is 13144666351. The next prime is 13144666387. The reversal of 13144666356 is 65366644131.

It is a super-2 number, since 2×13144666356² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13144666351) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 101335 + ... + 191201.

It is an arithmetic number, because the mean of its divisors is an integer number (490679280).

Almost surely, 2^13144666356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13144666356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17664454080).

13144666356 is an abundant number, since it is smaller than the sum of its proper divisors (22184241804).

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

13144666356 is a wasteful number, since it uses less digits than its factorization.

13144666356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90133 (or 90128 counting only the distinct ones).

The product of its digits is 933120, while the sum is 45.

The spelling of 13144666356 in words is "thirteen billion, one hundred forty-four million, six hundred sixty-six thousand, three hundred fifty-six".