204352180117278 has 16 divisors (see below), whose sum is σ = 408704590982016. Its totient is φ = 68117354914520.

The previous prime is 204352180117277. The next prime is 204352180117339. The reversal of 204352180117278 is 872711081253402.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 204352180117278.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204352180117273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3215425 + ... + 20470547.

It is an arithmetic number, because the mean of its divisors is an integer number (25544036936376).

Almost surely, 2^{204352180117278} is an apocalyptic number.

204352180117278 is an abundant number, since it is smaller than the sum of its proper divisors (204352410864738).

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

204352180117278 is a wasteful number, since it uses less digits than its factorization.

204352180117278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19228959.

The product of its (nonzero) digits is 1505280, while the sum is 51.

The spelling of 204352180117278 in words is "two hundred four trillion, three hundred fifty-two billion, one hundred eighty million, one hundred seventeen thousand, two hundred seventy-eight".