204050520199999 has 4 divisors (see below), whose sum is σ = 222600567490920. Its totient is φ = 185500472909080.

The previous prime is 204050520199979. The next prime is 204050520200047. The reversal of 204050520199999 is 999991025050402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204050520199999 is a prime.

It is a super-2 number, since 2×204050520199999² (a number of 29 digits) contains 22 as substring.

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 204050520199999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204050520199909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9275023645444 + ... + 9275023645465.

It is an arithmetic number, because the mean of its divisors is an integer number (55650141872730).

Almost surely, 2^{204050520199999} is an apocalyptic number.

204050520199999 is a deficient number, since it is larger than the sum of its proper divisors (18550047290921).

204050520199999 is a wasteful number, since it uses less digits than its factorization.

204050520199999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18550047290920.

The product of its (nonzero) digits is 23619600, while the sum is 64.

The spelling of 204050520199999 in words is "two hundred four trillion, fifty billion, five hundred twenty million, one hundred ninety-nine thousand, nine hundred ninety-nine".