111361004437 has 2 divisors, whose sum is σ = 111361004438. Its totient is φ = 111361004436.

The previous prime is 111361004429. The next prime is 111361004479. The reversal of 111361004437 is 734400163111.

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., 87895053841 + 23465950596 = 296471^2 + 153186^2 .

It is a cyclic number.

It is not a de Polignac number, because 111361004437 - 2³ = 111361004429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111361004399 and 111361004408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111361004407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55680502218 + 55680502219.

It is an arithmetic number, because the mean of its divisors is an integer number (55680502219).

Almost surely, 2^111361004437 is an apocalyptic number.

It is an amenable number.

111361004437 is a deficient number, since it is larger than the sum of its proper divisors (1).

111361004437 is an equidigital number, since it uses as much as digits as its factorization.

111361004437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 31.

Adding to 111361004437 its reverse (734400163111), we get a palindrome (845761167548).

The spelling of 111361004437 in words is "one hundred eleven billion, three hundred sixty-one million, four thousand, four hundred thirty-seven".