204999999983 has 2 divisors, whose sum is σ = 204999999984. Its totient is φ = 204999999982.

The previous prime is 204999999973. The next prime is 205000000021. The reversal of 204999999983 is 389999999402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204999999983 - 2¹² = 204999995887 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 204999999898 and 204999999907.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204999999973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102499999991 + 102499999992.

It is an arithmetic number, because the mean of its divisors is an integer number (102499999992).

Almost surely, 2^204999999983 is an apocalyptic number.

204999999983 is a deficient number, since it is larger than the sum of its proper divisors (1).

204999999983 is an equidigital number, since it uses as much as digits as its factorization.

204999999983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 918330048, while the sum is 80.

The spelling of 204999999983 in words is "two hundred four billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred eighty-three".