13440000061 has 2 divisors, whose sum is σ = 13440000062. Its totient is φ = 13440000060.

The previous prime is 13440000047. The next prime is 13440000089. The reversal of 13440000061 is 16000004431.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11305005625 + 2134994436 = 106325^2 + 46206^2 .

It is an emirp because it is prime and its reverse (16000004431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13440000061 - 2¹⁷ = 13439868989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13439999993 and 13440000038.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13440000661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6720000030 + 6720000031.

It is an arithmetic number, because the mean of its divisors is an integer number (6720000031).

Almost surely, 2^13440000061 is an apocalyptic number.

It is an amenable number.

13440000061 is a deficient number, since it is larger than the sum of its proper divisors (1).

13440000061 is an equidigital number, since it uses as much as digits as its factorization.

13440000061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 13440000061 its reverse (16000004431), we get a palindrome (29440004492).

The spelling of 13440000061 in words is "thirteen billion, four hundred forty million, sixty-one", and thus it is an aban number.