11318662656 has 400 divisors, whose sum is σ = 39040167936. Its totient is φ = 3197988864.

The previous prime is 11318662639. The next prime is 11318662657. The reversal of 11318662656 is 65626681311.

11318662656 is a `hidden beast` number, since 1 + 1 + 3 + 18 + 6 + 626 + 5 + 6 = 666.

It is a super-2 number, since 2×11318662656² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11318662657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 36868455 + ... + 36868761.

Almost surely, 2^11318662656 is an apocalyptic number.

11318662656 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 11318662656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19520083968).

11318662656 is an abundant number, since it is smaller than the sum of its proper divisors (27721505280).

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

11318662656 is an equidigital number, since it uses as much as digits as its factorization.

11318662656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471 (or 446 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The spelling of 11318662656 in words is "eleven billion, three hundred eighteen million, six hundred sixty-two thousand, six hundred fifty-six".