11158816987 has 8 divisors (see below), whose sum is σ = 11277633536. Its totient is φ = 11040202152.

The previous prime is 11158816973. The next prime is 11158817023. The reversal of 11158816987 is 78961885111.

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

It is a cyclic number.

It is not a de Polignac number, because 11158816987 - 2⁷ = 11158816859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11158816927) 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, 62128 + ... + 161794.

It is an arithmetic number, because the mean of its divisors is an integer number (1409704192).

Almost surely, 2^11158816987 is an apocalyptic number.

11158816987 is a deficient number, since it is larger than the sum of its proper divisors (118816549).

11158816987 is a wasteful number, since it uses less digits than its factorization.

11158816987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100857.

The product of its digits is 967680, while the sum is 55.

The spelling of 11158816987 in words is "eleven billion, one hundred fifty-eight million, eight hundred sixteen thousand, nine hundred eighty-seven".