204005161665435 has 96 divisors (see below), whose sum is σ = 373433633337600. Its totient is φ = 94793633026560.

The previous prime is 204005161665419. The next prime is 204005161665439. The reversal of 204005161665435 is 534566161500402.

It is a happy number.

204005161665435 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 204005161665435 - 2⁴ = 204005161665419 is a prime.

It is a super-2 number, since 2×204005161665435² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (204005161665439) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5083620 + ... + 20829150.

It is an arithmetic number, because the mean of its divisors is an integer number (3889933680600).

Almost surely, 2^{204005161665435} is an apocalyptic number.

204005161665435 is a deficient number, since it is larger than the sum of its proper divisors (169428471672165).

204005161665435 is a wasteful number, since it uses less digits than its factorization.

204005161665435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15745853 (or 15745840 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 48.

The spelling of 204005161665435 in words is "two hundred four trillion, five billion, one hundred sixty-one million, six hundred sixty-five thousand, four hundred thirty-five".