13449540436 has 12 divisors (see below), whose sum is σ = 23708497428. Its totient is φ = 6675684032.

The previous prime is 13449540427. The next prime is 13449540443. The reversal of 13449540436 is 63404594431.

13449540436 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 2 ways, for example, as 11827867536 + 1621672900 = 108756^2 + 40270^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13449540392 and 13449540401.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 12270931 + ... + 12272026.

It is an arithmetic number, because the mean of its divisors is an integer number (1975708119).

Almost surely, 2^13449540436 is an apocalyptic number.

It is an amenable number.

13449540436 is a deficient number, since it is larger than the sum of its proper divisors (10258956992).

13449540436 is a wasteful number, since it uses less digits than its factorization.

13449540436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24543098 (or 24543096 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 43.

The spelling of 13449540436 in words is "thirteen billion, four hundred forty-nine million, five hundred forty thousand, four hundred thirty-six".