11006009987 has 16 divisors (see below), whose sum is σ = 12661894080. Its totient is φ = 9371177088.

The previous prime is 11006009983. The next prime is 11006010007. The reversal of 11006009987 is 78990060011.

It is a happy number.

It is not a de Polignac number, because 11006009987 - 2² = 11006009983 is a prime.

It is a super-2 number, since 2×11006009987² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11006009981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 927689 + ... + 939477.

It is an arithmetic number, because the mean of its divisors is an integer number (791368380).

Almost surely, 2^11006009987 is an apocalyptic number.

11006009987 is a deficient number, since it is larger than the sum of its proper divisors (1655884093).

11006009987 is a wasteful number, since it uses less digits than its factorization.

11006009987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12670.

The product of its (nonzero) digits is 27216, while the sum is 41.

Adding to 11006009987 its reverse (78990060011), we get a palindrome (89996069998).

The spelling of 11006009987 in words is "eleven billion, six million, nine thousand, nine hundred eighty-seven".