204820930843199 has 32 divisors (see below), whose sum is σ = 233501814374400. Its totient is φ = 177949404783360.

The previous prime is 204820930843169. The next prime is 204820930843259. The reversal of 204820930843199 is 991348039028402.

It is a de Polignac number, because none of the positive numbers 2^k-204820930843199 is a prime.

It is a super-2 number, since 2×204820930843199² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204820930843169) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67146242 + ... + 70130304.

It is an arithmetic number, because the mean of its divisors is an integer number (7296931699200).

Almost surely, 2^{204820930843199} is an apocalyptic number.

204820930843199 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

204820930843199 is a deficient number, since it is larger than the sum of its proper divisors (28680883531201).

204820930843199 is a wasteful number, since it uses less digits than its factorization.

204820930843199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2986295.

The product of its (nonzero) digits is 26873856, while the sum is 62.

The spelling of 204820930843199 in words is "two hundred four trillion, eight hundred twenty billion, nine hundred thirty million, eight hundred forty-three thousand, one hundred ninety-nine".