204054681599 has 8 divisors (see below), whose sum is σ = 212184791760. Its totient is φ = 195997487616.

The previous prime is 204054681583. The next prime is 204054681799. The reversal of 204054681599 is 995186450402.

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

It is a cyclic number.

It is not a de Polignac number, because 204054681599 - 2⁴ = 204054681583 is a prime.

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 204054681599.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204054681799) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18223337 + ... + 18234530.

It is an arithmetic number, because the mean of its divisors is an integer number (26523098970).

Almost surely, 2^204054681599 is an apocalyptic number.

204054681599 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

204054681599 is a deficient number, since it is larger than the sum of its proper divisors (8130110161).

204054681599 is a wasteful number, since it uses less digits than its factorization.

204054681599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36458089.

The product of its (nonzero) digits is 3110400, while the sum is 53.

The spelling of 204054681599 in words is "two hundred four billion, fifty-four million, six hundred eighty-one thousand, five hundred ninety-nine".