11000100001987 has 4 divisors (see below), whose sum is σ = 11000110924696. Its totient is φ = 11000089079280.

The previous prime is 11000100001967. The next prime is 11000100001999. The reversal of 11000100001987 is 78910000100011.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11000100001987 - 2¹⁹ = 11000099477699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11000100001967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3777714 + ... + 6022567.

It is an arithmetic number, because the mean of its divisors is an integer number (2750027731174).

Almost surely, 2^{11000100001987} is an apocalyptic number.

11000100001987 is a deficient number, since it is larger than the sum of its proper divisors (10922709).

11000100001987 is an equidigital number, since it uses as much as digits as its factorization.

11000100001987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10922708.

The product of its (nonzero) digits is 504, while the sum is 28.

Adding to 11000100001987 its reverse (78910000100011), we get a palindrome (89910100101998).

The spelling of 11000100001987 in words is "eleven trillion, one hundred million, one thousand, nine hundred eighty-seven".