163511145660201 has 4 divisors (see below), whose sum is σ = 218014860880272. Its totient is φ = 109007430440132.

The previous prime is 163511145660157. The next prime is 163511145660263. The reversal of 163511145660201 is 102066541115361.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 163511145660201 - 2⁹ = 163511145659689 is a prime.

It is a super-2 number, since 2×163511145660201² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (163511145660301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27251857610031 + ... + 27251857610036.

It is an arithmetic number, because the mean of its divisors is an integer number (54503715220068).

Almost surely, 2^{163511145660201} is an apocalyptic number.

It is an amenable number.

163511145660201 is a deficient number, since it is larger than the sum of its proper divisors (54503715220071).

163511145660201 is an equidigital number, since it uses as much as digits as its factorization.

163511145660201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54503715220070.

The product of its (nonzero) digits is 129600, while the sum is 42.

Adding to 163511145660201 its reverse (102066541115361), we get a palindrome (265577686775562).

The spelling of 163511145660201 in words is "one hundred sixty-three trillion, five hundred eleven billion, one hundred forty-five million, six hundred sixty thousand, two hundred one".