13444145320887 has 16 divisors (see below), whose sum is σ = 20163144334560. Its totient is φ = 8962763545800.

The previous prime is 13444145320877. The next prime is 13444145320897. The reversal of 13444145320887 is 78802354144431.

13444145320887 is a `hidden beast` number, since 1 + 344 + 4 + 14 + 5 + 3 + 208 + 87 = 666.

13444145320887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13444145320877) and next prime (13444145320897).

It is not a de Polignac number, because 13444145320887 - 2⁷ = 13444145320759 is a prime.

It is a super-3 number, since 3×13444145320887³ (a number of 40 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13444145320807) 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, 3073647864 + ... + 3073652237.

It is an arithmetic number, because the mean of its divisors is an integer number (1260196520910).

Almost surely, 2^{13444145320887} is an apocalyptic number.

13444145320887 is a deficient number, since it is larger than the sum of its proper divisors (6718999013673).

13444145320887 is an frugal number, since it uses more digits than its factorization.

13444145320887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6147300122 (or 6147300104 counting only the distinct ones).

The product of its (nonzero) digits is 10321920, while the sum is 54.

The spelling of 13444145320887 in words is "thirteen trillion, four hundred forty-four billion, one hundred forty-five million, three hundred twenty thousand, eight hundred eighty-seven".