11538585837 has 10 divisors (see below), whose sum is σ = 17236653038. Its totient is φ = 7692390504.

The previous prime is 11538585811. The next prime is 11538585853. The reversal of 11538585837 is 73858583511.

11538585837 is a `hidden beast` number, since 1 + 1 + 5 + 3 + 8 + 58 + 583 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5950425321 + 5588160516 = 77139^2 + 74754^2 .

It is not a de Polignac number, because 11538585837 - 2¹⁴ = 11538569453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11538585887) 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 9 ways as a sum of consecutive naturals, for example, 71225758 + ... + 71225919.

Almost surely, 2^11538585837 is an apocalyptic number.

It is an amenable number.

11538585837 is a deficient number, since it is larger than the sum of its proper divisors (5698067201).

11538585837 is an equidigital number, since it uses as much as digits as its factorization.

11538585837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142451689 (or 142451680 counting only the distinct ones).

The product of its digits is 4032000, while the sum is 54.

The spelling of 11538585837 in words is "eleven billion, five hundred thirty-eight million, five hundred eighty-five thousand, eight hundred thirty-seven".