39978226304 has 64 divisors (see below), whose sum is σ = 81066744000. Its totient is φ = 19632678912.

The previous prime is 39978226303. The next prime is 39978226333. The reversal of 39978226304 is 40362287993.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (39978226303) 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, 13463732 + ... + 13466700.

It is an arithmetic number, because the mean of its divisors is an integer number (1266667875).

Almost surely, 2^39978226304 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 39978226304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40533372000).

39978226304 is an abundant number, since it is smaller than the sum of its proper divisors (41088517696).

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

39978226304 is a wasteful number, since it uses less digits than its factorization.

39978226304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4825 (or 4813 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 53.

The spelling of 39978226304 in words is "thirty-nine billion, nine hundred seventy-eight million, two hundred twenty-six thousand, three hundred four".