11001587085 has 24 divisors (see below), whose sum is σ = 19152708120. Its totient is φ = 5841885312.

The previous prime is 11001587041. The next prime is 11001587123. The reversal of 11001587085 is 58078510011.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1450238724 + 9551348361 = 38082^2 + 97731^2 .

It is not a de Polignac number, because 11001587085 - 2¹³ = 11001578893 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 523494 + ... + 544103.

It is an arithmetic number, because the mean of its divisors is an integer number (798029505).

Almost surely, 2^11001587085 is an apocalyptic number.

11001587085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11001587085 is a deficient number, since it is larger than the sum of its proper divisors (8151121035).

11001587085 is a wasteful number, since it uses less digits than its factorization.

11001587085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067837 (or 1067834 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 36.

The spelling of 11001587085 in words is "eleven billion, one million, five hundred eighty-seven thousand, eighty-five".