20612652204161 has 8 divisors (see below), whose sum is σ = 20635269288000. Its totient is φ = 20590041355920.

The previous prime is 20612652204061. The next prime is 20612652204191. The reversal of 20612652204161 is 16140225621602.

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

It is a cyclic number.

It is not a de Polignac number, because 20612652204161 - 2⁴² = 16214605693057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20612652204191) 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, 5071466 + ... + 8181996.

It is an arithmetic number, because the mean of its divisors is an integer number (2579408661000).

Almost surely, 2^{20612652204161} is an apocalyptic number.

It is an amenable number.

20612652204161 is a deficient number, since it is larger than the sum of its proper divisors (22617083839).

20612652204161 is a wasteful number, since it uses less digits than its factorization.

20612652204161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3117799.

The product of its (nonzero) digits is 69120, while the sum is 38.

Adding to 20612652204161 its reverse (16140225621602), we get a palindrome (36752877825763).

The spelling of 20612652204161 in words is "twenty trillion, six hundred twelve billion, six hundred fifty-two million, two hundred four thousand, one hundred sixty-one".