11911442036 has 24 divisors (see below), whose sum is σ = 22599162600. Its totient is φ = 5460688512.

The previous prime is 11911442021. The next prime is 11911442089. The reversal of 11911442036 is 63024411911.

It can be written as a sum of positive squares in 4 ways, for example, as 2085136 + 11909356900 = 1444^2 + 109130^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11911441993 and 11911442011.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 760931 + ... + 776426.

It is an arithmetic number, because the mean of its divisors is an integer number (941631775).

Almost surely, 2^11911442036 is an apocalyptic number.

It is an amenable number.

11911442036 is a deficient number, since it is larger than the sum of its proper divisors (10687720564).

11911442036 is a wasteful number, since it uses less digits than its factorization.

11911442036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1537523 (or 1537521 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

Adding to 11911442036 its reverse (63024411911), we get a palindrome (74935853947).

The spelling of 11911442036 in words is "eleven billion, nine hundred eleven million, four hundred forty-two thousand, thirty-six".