163331212361 has 4 divisors (see below), whose sum is σ = 163528711632. Its totient is φ = 163133713092.

The previous prime is 163331212333. The next prime is 163331212391. The reversal of 163331212361 is 163212133361.

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 163331212361 - 2¹⁸ = 163330950217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163331212391) 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, 98748395 + ... + 98750048.

It is an arithmetic number, because the mean of its divisors is an integer number (40882177908).

Almost surely, 2^163331212361 is an apocalyptic number.

It is an amenable number.

163331212361 is a deficient number, since it is larger than the sum of its proper divisors (197499271).

163331212361 is an equidigital number, since it uses as much as digits as its factorization.

163331212361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197499270.

The product of its digits is 11664, while the sum is 32.

The spelling of 163331212361 in words is "one hundred sixty-three billion, three hundred thirty-one million, two hundred twelve thousand, three hundred sixty-one".