11112621408 has 216 divisors, whose sum is σ = 37617908328. Its totient is φ = 3101027328.

The previous prime is 11112621361. The next prime is 11112621439. The reversal of 11112621408 is 80412621111.

It is a happy number.

11112621408 is a `hidden beast` number, since 111 + 126 + 21 + 408 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 597660 + ... + 615972.

It is an arithmetic number, because the mean of its divisors is an integer number (174156983).

Almost surely, 2^11112621408 is an apocalyptic number.

11112621408 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11112621408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18808954164).

11112621408 is an abundant number, since it is smaller than the sum of its proper divisors (26505286920).

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

11112621408 is a wasteful number, since it uses less digits than its factorization.

11112621408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18386 (or 18368 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 27.

The spelling of 11112621408 in words is "eleven billion, one hundred twelve million, six hundred twenty-one thousand, four hundred eight".