84070802178 has 160 divisors (see below), whose sum is σ = 218120950080. Its totient is φ = 24133982400.

The previous prime is 84070802161. The next prime is 84070802237. The reversal of 84070802178 is 87120807048.

It is a Curzon number.

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 79 ways as a sum of consecutive naturals, for example, 4086558 + ... + 4107078.

It is an arithmetic number, because the mean of its divisors is an integer number (1363255938).

Almost surely, 2^84070802178 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84070802178, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109060475040).

84070802178 is an abundant number, since it is smaller than the sum of its proper divisors (134050147902).

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

84070802178 is a wasteful number, since it uses less digits than its factorization.

84070802178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20587 (or 20556 counting only the distinct ones).

The product of its (nonzero) digits is 200704, while the sum is 45.

The spelling of 84070802178 in words is "eighty-four billion, seventy million, eight hundred two thousand, one hundred seventy-eight".