178868802020 has 12 divisors (see below), whose sum is σ = 375624484284. Its totient is φ = 71547520800.

The previous prime is 178868802019. The next prime is 178868802031. The reversal of 178868802020 is 20208868871.

It can be written as a sum of positive squares in 2 ways, for example, as 78642106624 + 100226695396 = 280432^2 + 316586^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 178868802020.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4471720031 + ... + 4471720070.

It is an arithmetic number, because the mean of its divisors is an integer number (31302040357).

Almost surely, 2^178868802020 is an apocalyptic number.

178868802020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

178868802020 is an abundant number, since it is smaller than the sum of its proper divisors (196755682264).

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

178868802020 is a wasteful number, since it uses less digits than its factorization.

178868802020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8943440110 (or 8943440108 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 50.

The spelling of 178868802020 in words is "one hundred seventy-eight billion, eight hundred sixty-eight million, eight hundred two thousand, twenty".