39078500000 has 84 divisors (see below), whose sum is σ = 96169745574. Its totient is φ = 15631200000.

The previous prime is 39078499973. The next prime is 39078500011. The reversal of 39078500000 is 587093.

It can be written as a sum of positive squares in 7 ways, for example, as 33075969424 + 6002530576 = 181868^2 + 77476^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 39078500000.

It is an unprimeable number.

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 13 ways as a sum of consecutive naturals, for example, 460922 + ... + 539078.

Almost surely, 2^39078500000 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 39078500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48084872787).

39078500000 is an abundant number, since it is smaller than the sum of its proper divisors (57091245574).

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

39078500000 is an frugal number, since it uses more digits than its factorization.

39078500000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78197 (or 78164 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

The spelling of 39078500000 in words is "thirty-nine billion, seventy-eight million, five hundred thousand".