11819408166 has 32 divisors (see below), whose sum is σ = 27647740800. Its totient is φ = 3732444360.

The previous prime is 11819408149. The next prime is 11819408177. The reversal of 11819408166 is 66180491811.

It is a happy number.

11819408166 is a `hidden beast` number, since 1 + 1 + 81 + 9 + 408 + 166 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5758920 + ... + 5760971.

It is an arithmetic number, because the mean of its divisors is an integer number (863991900).

Almost surely, 2^11819408166 is an apocalyptic number.

11819408166 is an abundant number, since it is smaller than the sum of its proper divisors (15828332634).

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

11819408166 is a wasteful number, since it uses less digits than its factorization.

11819408166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11519921 (or 11519915 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 45.

Adding to 11819408166 its reverse (66180491811), we get a palindrome (77999899977).

The spelling of 11819408166 in words is "eleven billion, eight hundred nineteen million, four hundred eight thousand, one hundred sixty-six".