11219357808 has 240 divisors, whose sum is σ = 34566644736. Its totient is φ = 3381626880.

The previous prime is 11219357797. The next prime is 11219357881. The reversal of 11219357808 is 80875391211.

11219357808 is a `hidden beast` number, since 1 + 1 + 219 + 357 + 80 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12369291 + ... + 12370197.

Almost surely, 2^11219357808 is an apocalyptic number.

11219357808 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 11219357808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17283322368).

11219357808 is an abundant number, since it is smaller than the sum of its proper divisors (23347286928).

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

11219357808 is a wasteful number, since it uses less digits than its factorization.

11219357808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132 (or 1123 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 45.

The spelling of 11219357808 in words is "eleven billion, two hundred nineteen million, three hundred fifty-seven thousand, eight hundred eight".