163840048361 has 4 divisors (see below), whose sum is σ = 178734598224. Its totient is φ = 148945498500.

The previous prime is 163840048313. The next prime is 163840048391.

163840048361 is nontrivially palindromic in base 10.

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 163840048361 - 2³⁴ = 146660179177 is a prime.

It is a super-2 number, since 2×163840048361² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163840048301) 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, 7447274915 + ... + 7447274936.

It is an arithmetic number, because the mean of its divisors is an integer number (44683649556).

Almost surely, 2^163840048361 is an apocalyptic number.

163840048361 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

163840048361 is a deficient number, since it is larger than the sum of its proper divisors (14894549863).

163840048361 is a wasteful number, since it uses less digits than its factorization.

163840048361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14894549862.

The product of its (nonzero) digits is 331776, while the sum is 44.

The spelling of 163840048361 in words is "one hundred sixty-three billion, eight hundred forty million, forty-eight thousand, three hundred sixty-one".