204206070016 has 72 divisors (see below), whose sum is σ = 439986309560. Its totient is φ = 94030626816.

The previous prime is 204206070007. The next prime is 204206070023. The reversal of 204206070016 is 610070602402.

It can be written as a sum of positive squares in 4 ways, for example, as 6287855616 + 197918214400 = 79296^2 + 444880^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1370170 + ... + 1511878.

Almost surely, 2^204206070016 is an apocalyptic number.

204206070016 is a gapful number since it is divisible by the number (26) 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 204206070016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219993154780).

204206070016 is an abundant number, since it is smaller than the sum of its proper divisors (235780239544).

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

204206070016 is a wasteful number, since it uses less digits than its factorization.

204206070016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142171 (or 142157 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

Adding to 204206070016 its reverse (610070602402), we get a palindrome (814276672418).

The spelling of 204206070016 in words is "two hundred four billion, two hundred six million, seventy thousand, sixteen".