11278401061 has 2 divisors, whose sum is σ = 11278401062. Its totient is φ = 11278401060.

The previous prime is 11278401041. The next prime is 11278401089. The reversal of 11278401061 is 16010487211.

11278401061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7830480100 + 3447920961 = 88490^2 + 58719^2 .

It is an emirp because it is prime and its reverse (16010487211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11278401061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11278401011) 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 as a sum of consecutive naturals, namely, 5639200530 + 5639200531.

It is an arithmetic number, because the mean of its divisors is an integer number (5639200531).

Almost surely, 2^11278401061 is an apocalyptic number.

It is an amenable number.

11278401061 is a deficient number, since it is larger than the sum of its proper divisors (1).

11278401061 is an equidigital number, since it uses as much as digits as its factorization.

11278401061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 31.

Adding to 11278401061 its reverse (16010487211), we get a palindrome (27288888272).

The spelling of 11278401061 in words is "eleven billion, two hundred seventy-eight million, four hundred one thousand, sixty-one".