204999999999 has 8 divisors (see below), whose sum is σ = 273453806640. Its totient is φ = 136606430016.

The previous prime is 204999999983. The next prime is 205000000021. The reversal of 204999999999 is 999999999402.

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

It is not a de Polignac number, because 204999999999 - 2⁴ = 204999999983 is a prime.

204999999999 is a modest number, since divided by 999999 gives 204999 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204994999999) 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, 15051222 + ... + 15064835.

It is an arithmetic number, because the mean of its divisors is an integer number (34181725830).

Almost surely, 2^204999999999 is an apocalyptic number.

204999999999 is a deficient number, since it is larger than the sum of its proper divisors (68453806641).

204999999999 is a wasteful number, since it uses less digits than its factorization.

204999999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30118329.

The product of its (nonzero) digits is 3099363912, while the sum is 87.

The spelling of 204999999999 in words is "two hundred four billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-nine".