11019706656 has 144 divisors (see below), whose sum is σ = 33541607232. Its totient is φ = 3103188480.

The previous prime is 11019706639. The next prime is 11019706693. The reversal of 11019706656 is 65660791011.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3385926 + ... + 3389178.

It is an arithmetic number, because the mean of its divisors is an integer number (232927828).

Almost surely, 2^11019706656 is an apocalyptic number.

11019706656 is a gapful number since it is divisible by the number (16) 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 11019706656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16770803616).

11019706656 is an abundant number, since it is smaller than the sum of its proper divisors (22521900576).

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

11019706656 is an equidigital number, since it uses as much as digits as its factorization.

11019706656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3415 (or 3336 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 42.

The spelling of 11019706656 in words is "eleven billion, nineteen million, seven hundred six thousand, six hundred fifty-six".