20401617104271 has 24 divisors (see below), whose sum is σ = 31913144106480. Its totient is φ = 12484702503936.

The previous prime is 20401617104123. The next prime is 20401617104293. The reversal of 20401617104271 is 17240171610402.

20401617104271 is a `hidden beast` number, since 2 + 0 + 4 + 0 + 1 + 617 + 10 + 4 + 27 + 1 = 666.

It is not a de Polignac number, because 20401617104271 - 2¹⁵ = 20401617071503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20401615104271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 487053906 + ... + 487095791.

It is an arithmetic number, because the mean of its divisors is an integer number (1329714337770).

Almost surely, 2^{20401617104271} is an apocalyptic number.

20401617104271 is a deficient number, since it is larger than the sum of its proper divisors (11511527002209).

20401617104271 is a wasteful number, since it uses less digits than its factorization.

20401617104271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974149895 (or 974149892 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

Adding to 20401617104271 its reverse (17240171610402), we get a palindrome (37641788714673).

The spelling of 20401617104271 in words is "twenty trillion, four hundred one billion, six hundred seventeen million, one hundred four thousand, two hundred seventy-one".