163601613201201 has 24 divisors (see below), whose sum is σ = 264824888473920. Its totient is φ = 87987422222592.

The previous prime is 163601613201179. The next prime is 163601613201227. The reversal of 163601613201201 is 102102316106361.

It is a happy number.

It is not a de Polignac number, because 163601613201201 - 2⁶ = 163601613201137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (163601613201401) 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, 13478459346 + ... + 13478471483.

It is an arithmetic number, because the mean of its divisors is an integer number (11034370353080).

Almost surely, 2^{163601613201201} is an apocalyptic number.

It is an amenable number.

163601613201201 is a deficient number, since it is larger than the sum of its proper divisors (101223275272719).

163601613201201 is a wasteful number, since it uses less digits than its factorization.

163601613201201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26956930873 (or 26956930856 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

Adding to 163601613201201 its reverse (102102316106361), we get a palindrome (265703929307562).

The spelling of 163601613201201 in words is "one hundred sixty-three trillion, six hundred one billion, six hundred thirteen million, two hundred one thousand, two hundred one".