11501042436 has 72 divisors (see below), whose sum is σ = 33150086424. Its totient is φ = 3330616320.

The previous prime is 11501042341. The next prime is 11501042461. The reversal of 11501042436 is 63424010511.

It is a happy number.

11501042436 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 4 ways, for example, as 2233129536 + 9267912900 = 47256^2 + 96270^2 .

It is a super-2 number, since 2×11501042436² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 714835 + ... + 730746.

It is an arithmetic number, because the mean of its divisors is an integer number (460417867).

Almost surely, 2^11501042436 is an apocalyptic number.

It is an amenable number.

11501042436 is an abundant number, since it is smaller than the sum of its proper divisors (21649043988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11501042436 is a wasteful number, since it uses less digits than its factorization.

11501042436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1445621 (or 1445616 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 11501042436 its reverse (63424010511), we get a palindrome (74925052947).

The spelling of 11501042436 in words is "eleven billion, five hundred one million, forty-two thousand, four hundred thirty-six".