11641439647 has 8 divisors (see below), whose sum is σ = 11786906880. Its totient is φ = 11496096600.

The previous prime is 11641439609. The next prime is 11641439651. The reversal of 11641439647 is 74693414611.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11641439647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11641439597 and 11641439606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11641434647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165304 + ... + 224962.

It is an arithmetic number, because the mean of its divisors is an integer number (1473363360).

Almost surely, 2^11641439647 is an apocalyptic number.

11641439647 is a deficient number, since it is larger than the sum of its proper divisors (145467233).

11641439647 is an equidigital number, since it uses as much as digits as its factorization.

11641439647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62093.

The product of its digits is 435456, while the sum is 46.

The spelling of 11641439647 in words is "eleven billion, six hundred forty-one million, four hundred thirty-nine thousand, six hundred forty-seven".