11147981056 has 27 divisors (see below), whose sum is σ = 22255787911. Its totient is φ = 5573145856.

The previous prime is 11147981041. The next prime is 11147981071. The reversal of 11147981056 is 65018974111.

The square root of 11147981056 is 105584.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (11147981041) and next prime (11147981071).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1686045 + ... + 1692643.

Almost surely, 2^11147981056 is an apocalyptic number.

11147981056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

11147981056 is the 105584-th square number.

It is an amenable number.

11147981056 is a deficient number, since it is larger than the sum of its proper divisors (11107806855).

11147981056 is an frugal number, since it uses more digits than its factorization.

11147981056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13214 (or 6601 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 43.

The spelling of 11147981056 in words is "eleven billion, one hundred forty-seven million, nine hundred eighty-one thousand, fifty-six".