11817054522 has 480 divisors, whose sum is σ = 35970217920. Its totient is φ = 2880541440.

The previous prime is 11817054493. The next prime is 11817054523. The reversal of 11817054522 is 22545071811.

It is a happy number.

11817054522 is a `hidden beast` number, since 1 + 1 + 81 + 7 + 0 + 54 + 522 = 666.

It is not an unprimeable number, because it can be changed into a prime (11817054523) by changing a digit.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 288220822 + ... + 288220862.

It is an arithmetic number, because the mean of its divisors is an integer number (74937954).

Almost surely, 2^11817054522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11817054522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17985108960).

11817054522 is an abundant number, since it is smaller than the sum of its proper divisors (24153163398).

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

11817054522 is an equidigital number, since it uses as much as digits as its factorization.

11817054522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118 (or 85 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 36.

The spelling of 11817054522 in words is "eleven billion, eight hundred seventeen million, fifty-four thousand, five hundred twenty-two".