204994153699 has 2 divisors, whose sum is σ = 204994153700. Its totient is φ = 204994153698.

The previous prime is 204994153669. The next prime is 204994153711. The reversal of 204994153699 is 996351499402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204994153699 - 2¹⁵ = 204994120931 is a prime.

It is not a weakly prime, because it can be changed into another prime (204994153619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102497076849 + 102497076850.

It is an arithmetic number, because the mean of its divisors is an integer number (102497076850).

Almost surely, 2^204994153699 is an apocalyptic number.

204994153699 is a deficient number, since it is larger than the sum of its proper divisors (1).

204994153699 is an equidigital number, since it uses as much as digits as its factorization.

204994153699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18895680, while the sum is 61.

The spelling of 204994153699 in words is "two hundred four billion, nine hundred ninety-four million, one hundred fifty-three thousand, six hundred ninety-nine".