204412252161 has 8 divisors (see below), whose sum is σ = 293515028800. Its totient is φ = 125792155152.

The previous prime is 204412252117. The next prime is 204412252199. The reversal of 204412252161 is 161252214402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 204412252161 - 2¹⁰ = 204412251137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204412252111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2620669861 + ... + 2620669938.

It is an arithmetic number, because the mean of its divisors is an integer number (36689378600).

Almost surely, 2^204412252161 is an apocalyptic number.

It is an amenable number.

204412252161 is a deficient number, since it is larger than the sum of its proper divisors (89102776639).

204412252161 is a wasteful number, since it uses less digits than its factorization.

204412252161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5241339815.

The product of its (nonzero) digits is 7680, while the sum is 30.

Adding to 204412252161 its reverse (161252214402), we get a palindrome (365664466563).

The spelling of 204412252161 in words is "two hundred four billion, four hundred twelve million, two hundred fifty-two thousand, one hundred sixty-one".