13561343361442 has 8 divisors (see below), whose sum is σ = 20478538633500. Its totient is φ = 6735163816944.

The previous prime is 13561343361431. The next prime is 13561343361481. The reversal of 13561343361442 is 24416334316531.

It is a happy number.

13561343361442 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 13514071470201 + 47271891241 = 3676149^2 + 217421^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 13561343361392 and 13561343361401.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22753931517 + ... + 22753932112.

Almost surely, 2^{13561343361442} is an apocalyptic number.

13561343361442 is a deficient number, since it is larger than the sum of its proper divisors (6917195272058).

13561343361442 is a wasteful number, since it uses less digits than its factorization.

13561343361442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45507863780.

The product of its digits is 1866240, while the sum is 46.

Adding to 13561343361442 its reverse (24416334316531), we get a palindrome (37977677677973).

The spelling of 13561343361442 in words is "thirteen trillion, five hundred sixty-one billion, three hundred forty-three million, three hundred sixty-one thousand, four hundred forty-two".