20368655032171 has 16 divisors (see below), whose sum is σ = 21701581098624. Its totient is φ = 19050730049664.

The previous prime is 20368655032169. The next prime is 20368655032189. The reversal of 20368655032171 is 17123055686302.

It is a happy number.

It is not a de Polignac number, because 20368655032171 - 2¹ = 20368655032169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20368655032471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24313740 + ... + 25137526.

It is an arithmetic number, because the mean of its divisors is an integer number (1356348818664).

Almost surely, 2^{20368655032171} is an apocalyptic number.

20368655032171 is a deficient number, since it is larger than the sum of its proper divisors (1332926066453).

20368655032171 is a wasteful number, since it uses less digits than its factorization.

20368655032171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832890.

The product of its (nonzero) digits is 1814400, while the sum is 49.

The spelling of 20368655032171 in words is "twenty trillion, three hundred sixty-eight billion, six hundred fifty-five million, thirty-two thousand, one hundred seventy-one".