11663135447 has 8 divisors (see below), whose sum is σ = 12364222176. Its totient is φ = 10963717632.

The previous prime is 11663135441. The next prime is 11663135501. The reversal of 11663135447 is 74453136611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11663135447 - 2⁴ = 11663135431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11663135441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 402818 + ... + 430799.

It is an arithmetic number, because the mean of its divisors is an integer number (1545527772).

Almost surely, 2^11663135447 is an apocalyptic number.

11663135447 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

11663135447 is a deficient number, since it is larger than the sum of its proper divisors (701086729).

11663135447 is an equidigital number, since it uses as much as digits as its factorization.

11663135447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834457.

The product of its digits is 181440, while the sum is 41.

The spelling of 11663135447 in words is "eleven billion, six hundred sixty-three million, one hundred thirty-five thousand, four hundred forty-seven".