11136821287 has 8 divisors (see below), whose sum is σ = 11180937600. Its totient is φ = 11092733664.

The previous prime is 11136821273. The next prime is 11136821317. The reversal of 11136821287 is 78212863111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11136821287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11136821587) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1099914 + ... + 1109992.

It is an arithmetic number, because the mean of its divisors is an integer number (1397617200).

Almost surely, 2^11136821287 is an apocalyptic number.

11136821287 is a deficient number, since it is larger than the sum of its proper divisors (44116313).

11136821287 is a wasteful number, since it uses less digits than its factorization.

11136821287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14345.

The product of its digits is 32256, while the sum is 40.

The spelling of 11136821287 in words is "eleven billion, one hundred thirty-six million, eight hundred twenty-one thousand, two hundred eighty-seven".