13503444273 has 18 divisors (see below), whose sum is σ = 21439354482. Its totient is φ = 8183904960.

The previous prime is 13503444271. The next prime is 13503444281. The reversal of 13503444273 is 37244430531.

13503444273 is a `hidden beast` number, since 1 + 3 + 503 + 44 + 42 + 73 = 666.

13503444273 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 11651691249 + 1851753024 = 107943^2 + 43032^2 .

It is not a de Polignac number, because 13503444273 - 2¹ = 13503444271 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13503444271) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 6198840 + ... + 6201017.

It is an arithmetic number, because the mean of its divisors is an integer number (1191075249).

Almost surely, 2^13503444273 is an apocalyptic number.

It is an amenable number.

13503444273 is a deficient number, since it is larger than the sum of its proper divisors (7935910209).

13503444273 is a wasteful number, since it uses less digits than its factorization.

13503444273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12399885 (or 12399871 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 36.

The spelling of 13503444273 in words is "thirteen billion, five hundred three million, four hundred forty-four thousand, two hundred seventy-three".