13144279881216 has 160 divisors (see below), whose sum is σ = 38479406410368. Its totient is φ = 3954040586240.

The previous prime is 13144279881211. The next prime is 13144279881259. The reversal of 13144279881216 is 61218897244131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13144279881211) 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, 524490 + ... + 5153993.

Almost surely, 2^{13144279881216} is an apocalyptic number.

13144279881216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13144279881216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19239703205184).

13144279881216 is an abundant number, since it is smaller than the sum of its proper divisors (25335126529152).

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

13144279881216 is a wasteful number, since it uses less digits than its factorization.

13144279881216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5678652 (or 5678636 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 57.

The spelling of 13144279881216 in words is "thirteen trillion, one hundred forty-four billion, two hundred seventy-nine million, eight hundred eighty-one thousand, two hundred sixteen".