11500104138 has 32 divisors (see below), whose sum is σ = 24358211136. Its totient is φ = 3607127808.

The previous prime is 11500104137. The next prime is 11500104139. The reversal of 11500104138 is 83140100511.

It is an interprime number because it is at equal distance from previous prime (11500104137) and next prime (11500104139).

It is not an unprimeable number, because it can be changed into a prime (11500104137) 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 in 15 ways as a sum of consecutive naturals, for example, 685620 + ... + 702192.

It is an arithmetic number, because the mean of its divisors is an integer number (761194098).

Almost surely, 2^11500104138 is an apocalyptic number.

11500104138 is an abundant number, since it is smaller than the sum of its proper divisors (12858106998).

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

11500104138 is a wasteful number, since it uses less digits than its factorization.

11500104138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23398.

The product of its (nonzero) digits is 480, while the sum is 24.

Adding to 11500104138 its reverse (83140100511), we get a palindrome (94640204649).

The spelling of 11500104138 in words is "eleven billion, five hundred million, one hundred four thousand, one hundred thirty-eight".