11001000015 has 56 divisors (see below), whose sum is σ = 19936057680. Its totient is φ = 5824721664.

The previous prime is 11001000001. The next prime is 11001000047. The reversal of 11001000015 is 51000010011.

It is not a de Polignac number, because 11001000015 - 2⁸ = 11000999759 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 11000999970 and 11001000006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 495799 + ... + 517511.

It is an arithmetic number, because the mean of its divisors is an integer number (356001030).

Almost surely, 2^11001000015 is an apocalyptic number.

11001000015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11001000015 is a deficient number, since it is larger than the sum of its proper divisors (8935057665).

11001000015 is an equidigital number, since it uses as much as digits as its factorization.

11001000015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21875 (or 21860 counting only the distinct ones).

The product of its (nonzero) digits is 5, while the sum is 9.

Adding to 11001000015 its reverse (51000010011), we get a palindrome (62001010026).

The spelling of 11001000015 in words is "eleven billion, one million, fifteen", and thus it is an aban number and an uban number.