204013116551216 has 80 divisors (see below), whose sum is σ = 484491356640000. Its totient is φ = 81269517798144.

The previous prime is 204013116551213. The next prime is 204013116551323. The reversal of 204013116551216 is 612155611310402.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a self number, because there is not a number n which added to its sum of digits gives 204013116551216.

It is not an unprimeable number, because it can be changed into a prime (204013116551213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 904328966 + ... + 904554533.

It is an arithmetic number, because the mean of its divisors is an integer number (6056141958000).

Almost surely, 2^{204013116551216} is an apocalyptic number.

It is an amenable number.

204013116551216 is an abundant number, since it is smaller than the sum of its proper divisors (280478240088784).

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

204013116551216 is a wasteful number, since it uses less digits than its factorization.

204013116551216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1808883586 (or 1808883580 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 38.

Adding to 204013116551216 its reverse (612155611310402), we get a palindrome (816168727861618).

The spelling of 204013116551216 in words is "two hundred four trillion, thirteen billion, one hundred sixteen million, five hundred fifty-one thousand, two hundred sixteen".