11648436646 has 16 divisors (see below), whose sum is σ = 21784089600. Its totient is φ = 4538351880.

The previous prime is 11648436643. The next prime is 11648436689. The reversal of 11648436646 is 64663484611.

It is a self number, because there is not a number n which added to its sum of digits gives 11648436646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11648436643) 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, 37819446 + ... + 37819753.

It is an arithmetic number, because the mean of its divisors is an integer number (1361505600).

Almost surely, 2^11648436646 is an apocalyptic number.

11648436646 is a deficient number, since it is larger than the sum of its proper divisors (10135652954).

11648436646 is a wasteful number, since it uses less digits than its factorization.

11648436646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75639219.

The product of its digits is 1990656, while the sum is 49.

The spelling of 11648436646 in words is "eleven billion, six hundred forty-eight million, four hundred thirty-six thousand, six hundred forty-six".