204124456643 has 8 divisors (see below), whose sum is σ = 223584598080. Its totient is φ = 185492406400.

The previous prime is 204124456619. The next prime is 204124456687. The reversal of 204124456643 is 346654421402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204124456643 is a prime.

It is a super-3 number, since 3×204124456643³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 204124456643.

It is not an unprimeable number, because it can be changed into a prime (204124456243) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 207022283 + ... + 207023268.

It is an arithmetic number, because the mean of its divisors is an integer number (27948074760).

Almost surely, 2^204124456643 is an apocalyptic number.

204124456643 is a deficient number, since it is larger than the sum of its proper divisors (19460141437).

204124456643 is a wasteful number, since it uses less digits than its factorization.

204124456643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414045597.

The product of its (nonzero) digits is 552960, while the sum is 41.

The spelling of 204124456643 in words is "two hundred four billion, one hundred twenty-four million, four hundred fifty-six thousand, six hundred forty-three".