78489503008 has 72 divisors (see below), whose sum is σ = 180831958272. Its totient is φ = 33436819584.

The previous prime is 78489502963. The next prime is 78489503039. The reversal of 78489503008 is 80030598487.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111985 + ... + 411727.

It is an arithmetic number, because the mean of its divisors is an integer number (2511554976).

Almost surely, 2^78489503008 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 78489503008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90415979136).

78489503008 is an abundant number, since it is smaller than the sum of its proper divisors (102342455264).

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

78489503008 is a wasteful number, since it uses less digits than its factorization.

78489503008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299934 (or 299919 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 52.

The spelling of 78489503008 in words is "seventy-eight billion, four hundred eighty-nine million, five hundred three thousand, eight".