39544579648 has 112 divisors (see below), whose sum is σ = 95095551744. Its totient is φ = 15927459840.

The previous prime is 39544579639. The next prime is 39544579649. The reversal of 39544579648 is 84697544593.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a self number, because there is not a number n which added to its sum of digits gives 39544579648.

It is not an unprimeable number, because it can be changed into a prime (39544579649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5792365 + ... + 5799187.

Almost surely, 2^39544579648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39544579648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47547775872).

39544579648 is an abundant number, since it is smaller than the sum of its proper divisors (55550972096).

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

39544579648 is a wasteful number, since it uses less digits than its factorization.

39544579648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7620 (or 7610 counting only the distinct ones).

The product of its digits is 130636800, while the sum is 64.

The spelling of 39544579648 in words is "thirty-nine billion, five hundred forty-four million, five hundred seventy-nine thousand, six hundred forty-eight".