163145541361 has 8 divisors (see below), whose sum is σ = 185715082944. Its totient is φ = 141865687920.

The previous prime is 163145541313. The next prime is 163145541413.

It is a happy number.

163145541361 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 163145541361 - 2¹¹ = 163145539313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163145541661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322421766 + ... + 322422271.

It is an arithmetic number, because the mean of its divisors is an integer number (23214385368).

Almost surely, 2^163145541361 is an apocalyptic number.

163145541361 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

163145541361 is a deficient number, since it is larger than the sum of its proper divisors (22569541583).

163145541361 is a wasteful number, since it uses less digits than its factorization.

163145541361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644844071.

The product of its digits is 129600, while the sum is 40.

The spelling of 163145541361 in words is "one hundred sixty-three billion, one hundred forty-five million, five hundred forty-one thousand, three hundred sixty-one".