11822826666 has 128 divisors (see below), whose sum is σ = 29030400000. Its totient is φ = 3136573440.

The previous prime is 11822826637. The next prime is 11822826671. The reversal of 11822826666 is 66662822811.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9465210 + ... + 9466458.

It is an arithmetic number, because the mean of its divisors is an integer number (226800000).

Almost surely, 2^11822826666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11822826666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14515200000).

11822826666 is an abundant number, since it is smaller than the sum of its proper divisors (17207573334).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11822826666 is a wasteful number, since it uses less digits than its factorization.

11822826666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1564.

The product of its digits is 663552, while the sum is 48.

The spelling of 11822826666 in words is "eleven billion, eight hundred twenty-two million, eight hundred twenty-six thousand, six hundred sixty-six".