163389561613 has 4 divisors (see below), whose sum is σ = 164302352640. Its totient is φ = 162476770588.

The previous prime is 163389561607. The next prime is 163389561623. The reversal of 163389561613 is 316165983361.

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 163389561613 - 2³⁷ = 25950608141 is a prime.

It is a super-2 number, since 2×163389561613² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163389561623) 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, 456395245 + ... + 456395602.

It is an arithmetic number, because the mean of its divisors is an integer number (41075588160).

Almost surely, 2^163389561613 is an apocalyptic number.

It is an amenable number.

163389561613 is a deficient number, since it is larger than the sum of its proper divisors (912791027).

163389561613 is an equidigital number, since it uses as much as digits as its factorization.

163389561613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912791026.

The product of its digits is 2099520, while the sum is 52.

The spelling of 163389561613 in words is "one hundred sixty-three billion, three hundred eighty-nine million, five hundred sixty-one thousand, six hundred thirteen".