11949944064 has 36 divisors (see below), whose sum is σ = 31804280256. Its totient is φ = 3983314432.

The previous prime is 11949944059. The next prime is 11949944099. The reversal of 11949944064 is 46044994911.

It is a junction number, because it is equal to n+sod(n) for n = 11949943998 and 11949944016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7779144 + ... + 7780679.

Almost surely, 2^11949944064 is an apocalyptic number.

It is an amenable number.

11949944064 is an abundant number, since it is smaller than the sum of its proper divisors (19854336192).

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

11949944064 is an equidigital number, since it uses as much as digits as its factorization.

11949944064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15559842 (or 15559828 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 51.

The spelling of 11949944064 in words is "eleven billion, nine hundred forty-nine million, nine hundred forty-four thousand, sixty-four".