11147769889 has 9 divisors (see below), whose sum is σ = 11767492467. Its totient is φ = 10559144664.

The previous prime is 11147769883. The next prime is 11147769917. The reversal of 11147769889 is 98896774111.

The square root of 11147769889 is 105583.

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

It can be written as a sum of positive squares in only one way, i.e., 10507275025 + 640494864 = 102505^2 + 25308^2 .

It is not a de Polignac number, because 11147769889 - 2⁷ = 11147769761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11147769883) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2003299 + ... + 2008855.

It is an arithmetic number, because the mean of its divisors is an integer number (1307499163).

Almost surely, 2^11147769889 is an apocalyptic number.

11147769889 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

11147769889 is the 105583-rd square number.

11147769889 is the 52792-nd centered octagonal number.

It is an amenable number.

11147769889 is a deficient number, since it is larger than the sum of its proper divisors (619722578).

11147769889 is an frugal number, since it uses more digits than its factorization.

11147769889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11152 (or 5576 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 61.

The spelling of 11147769889 in words is "eleven billion, one hundred forty-seven million, seven hundred sixty-nine thousand, eight hundred eighty-nine".