11538585887 has 2 divisors, whose sum is σ = 11538585888. Its totient is φ = 11538585886.

The previous prime is 11538585853. The next prime is 11538585907. The reversal of 11538585887 is 78858583511.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11538585887 - 2²⁸ = 11270150431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11538584887) 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, 5769292943 + 5769292944.

It is an arithmetic number, because the mean of its divisors is an integer number (5769292944).

Almost surely, 2^11538585887 is an apocalyptic number.

11538585887 is a deficient number, since it is larger than the sum of its proper divisors (1).

11538585887 is an equidigital number, since it uses as much as digits as its factorization.

11538585887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10752000, while the sum is 59.

The spelling of 11538585887 in words is "eleven billion, five hundred thirty-eight million, five hundred eighty-five thousand, eight hundred eighty-seven".