204666061400 has 96 divisors (see below), whose sum is σ = 485104107600. Its totient is φ = 80275852800.

The previous prime is 204666061399. The next prime is 204666061423. The reversal of 204666061400 is 4160666402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23092970 + ... + 23101830.

Almost surely, 2^204666061400 is an apocalyptic number.

204666061400 is a gapful number since it is divisible by the number (20) 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 204666061400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242552053800).

204666061400 is an abundant number, since it is smaller than the sum of its proper divisors (280438046200).

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

204666061400 is a wasteful number, since it uses less digits than its factorization.

204666061400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11109 (or 11100 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 35.

The spelling of 204666061400 in words is "two hundred four billion, six hundred sixty-six million, sixty-one thousand, four hundred".