39385778208 has 144 divisors (see below), whose sum is σ = 120462479424. Its totient is φ = 11234818560.

The previous prime is 39385778203. The next prime is 39385778209. The reversal of 39385778208 is 80287758393.

It is not an unprimeable number, because it can be changed into a prime (39385778203) 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 23 ways as a sum of consecutive naturals, for example, 3037018 + ... + 3049958.

It is an arithmetic number, because the mean of its divisors is an integer number (836544996).

Almost surely, 2^39385778208 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 39385778208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60231239712).

39385778208 is an abundant number, since it is smaller than the sum of its proper divisors (81076701216).

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

39385778208 is a wasteful number, since it uses less digits than its factorization.

39385778208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13615 (or 13600 counting only the distinct ones).

The product of its (nonzero) digits is 20321280, while the sum is 60.

The spelling of 39385778208 in words is "thirty-nine billion, three hundred eighty-five million, seven hundred seventy-eight thousand, two hundred eight".