163123404321361 has 12 divisors (see below), whose sum is σ = 179301578982400. Its totient is φ = 148293468849240.

The previous prime is 163123404321341. The next prime is 163123404321481.

163123404321361 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 163123404321361 - 2²⁵ = 163123370766929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163123404321301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33415060 + ... + 37984378.

Almost surely, 2^{163123404321361} is an apocalyptic number.

163123404321361 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

163123404321361 is a deficient number, since it is larger than the sum of its proper divisors (16178174661039).

163123404321361 is a wasteful number, since it uses less digits than its factorization.

163123404321361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4864380 (or 4864369 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 40.

The spelling of 163123404321361 in words is "one hundred sixty-three trillion, one hundred twenty-three billion, four hundred four million, three hundred twenty-one thousand, three hundred sixty-one".