11609216890 has 8 divisors (see below), whose sum is σ = 20896590420. Its totient is φ = 4643686752.

The previous prime is 11609216873. The next prime is 11609216897. The reversal of 11609216890 is 9861290611.

It can be written as a sum of positive squares in 2 ways, for example, as 11223919249 + 385297641 = 105943^2 + 19629^2 .

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

It is a super-2 number, since 2×11609216890² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11609216897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 580460835 + ... + 580460854.

Almost surely, 2^11609216890 is an apocalyptic number.

11609216890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11609216890 is a deficient number, since it is larger than the sum of its proper divisors (9287373530).

11609216890 is a wasteful number, since it uses less digits than its factorization.

11609216890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160921696.

The product of its (nonzero) digits is 46656, while the sum is 43.

The spelling of 11609216890 in words is "eleven billion, six hundred nine million, two hundred sixteen thousand, eight hundred ninety".