84628978320 has 160 divisors (see below), whose sum is σ = 268534384128. Its totient is φ = 22037889024.

The previous prime is 84628978319. The next prime is 84628978351. The reversal of 84628978320 is 2387982648.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5146752 + ... + 5163168.

Almost surely, 2^84628978320 is an apocalyptic number.

84628978320 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84628978320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134267192064).

84628978320 is an abundant number, since it is smaller than the sum of its proper divisors (183905405808).

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

84628978320 is a wasteful number, since it uses less digits than its factorization.

84628978320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16937 (or 16931 counting only the distinct ones).

The product of its (nonzero) digits is 9289728, while the sum is 57.

The spelling of 84628978320 in words is "eighty-four billion, six hundred twenty-eight million, nine hundred seventy-eight thousand, three hundred twenty".