11091697663536 has 280 divisors, whose sum is σ = 37818674714784. Its totient is φ = 3083405460480.

The previous prime is 11091697663531. The next prime is 11091697663559. The reversal of 11091697663536 is 63536679619011.

11091697663536 is a `hidden beast` number, since 1 + 1 + 0 + 9 + 1 + 6 + 97 + 6 + 6 + 3 + 536 = 666.

It is a super-2 number, since 2×11091697663536² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (11091697663531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 1185196 + ... + 4856756.

Almost surely, 2^{11091697663536} is an apocalyptic number.

11091697663536 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 11091697663536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18909337357392).

11091697663536 is an abundant number, since it is smaller than the sum of its proper divisors (26726977051248).

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

11091697663536 is an equidigital number, since it uses as much as digits as its factorization.

11091697663536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3671631 (or 3671610 counting only the distinct ones).

The product of its (nonzero) digits is 33067440, while the sum is 63.

The spelling of 11091697663536 in words is "eleven trillion, ninety-one billion, six hundred ninety-seven million, six hundred sixty-three thousand, five hundred thirty-six".