1000011000987 has 72 divisors (see below), whose sum is σ = 1565756162672. Its totient is φ = 638012635200.

The previous prime is 1000011000931. The next prime is 1000011000991. The reversal of 1000011000987 is 7890001100001.

It is not a de Polignac number, because 1000011000987 - 2¹¹ = 1000010998939 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1000011000987.

It is not an unprimeable number, because it can be changed into a prime (1000011002987) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 14774412 + ... + 14841942.

Almost surely, 2^{1000011000987} is an apocalyptic number.

1000011000987 is a deficient number, since it is larger than the sum of its proper divisors (565745161685).

1000011000987 is an frugal number, since it uses more digits than its factorization.

1000011000987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67653 (or 67632 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 27.

Adding to 1000011000987 its reverse (7890001100001), we get a palindrome (8890012100988).

The spelling of 1000011000987 in words is "one trillion, eleven million, nine hundred eighty-seven", and thus it is an aban number.