204538101216 has 48 divisors (see below), whose sum is σ = 550007953488. Its totient is φ = 66516454400.

The previous prime is 204538101179. The next prime is 204538101223. The reversal of 204538101216 is 612101835402.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

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, 25979055 + ... + 25986926.

It is an arithmetic number, because the mean of its divisors is an integer number (11458499031).

Almost surely, 2^204538101216 is an apocalyptic number.

It is an amenable number.

204538101216 is an abundant number, since it is smaller than the sum of its proper divisors (345469852272).

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

204538101216 is a wasteful number, since it uses less digits than its factorization.

204538101216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51966035 (or 51966027 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

Adding to 204538101216 its reverse (612101835402), we get a palindrome (816639936618).

The spelling of 204538101216 in words is "two hundred four billion, five hundred thirty-eight million, one hundred one thousand, two hundred sixteen".