11689285690 has 16 divisors (see below), whose sum is σ = 21045630600. Its totient is φ = 4674621760.

The previous prime is 11689285687. The next prime is 11689285691. The reversal of 11689285690 is 9658298611.

11689285690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 108117²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 4208246641 + 7481039049 = 64871^2 + 86493^2 .

It is a super-2 number, since 2×11689285690² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11689285691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90901 + ... + 177880.

Almost surely, 2^11689285690 is an apocalyptic number.

11689285690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11689285690 is a deficient number, since it is larger than the sum of its proper divisors (9356344910).

11689285690 is a wasteful number, since it uses less digits than its factorization.

11689285690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273137.

The product of its (nonzero) digits is 1866240, while the sum is 55.

The spelling of 11689285690 in words is "eleven billion, six hundred eighty-nine million, two hundred eighty-five thousand, six hundred ninety".