163004400001 has 4 divisors (see below), whose sum is σ = 166079954772. Its totient is φ = 159928845232.

The previous prime is 163004399983. The next prime is 163004400017. The reversal of 163004400001 is 100004400361.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 90750960001 + 72253440000 = 301249^2 + 268800^2 .

It is a cyclic number.

It is not a de Polignac number, because 163004400001 - 2⁵ = 163004399969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163004400071) 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, 1537777306 + ... + 1537777411.

It is an arithmetic number, because the mean of its divisors is an integer number (41519988693).

Almost surely, 2^163004400001 is an apocalyptic number.

It is an amenable number.

163004400001 is a deficient number, since it is larger than the sum of its proper divisors (3075554771).

163004400001 is an equidigital number, since it uses as much as digits as its factorization.

163004400001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3075554770.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 163004400001 its reverse (100004400361), we get a palindrome (263008800362).

The spelling of 163004400001 in words is "one hundred sixty-three billion, four million, four hundred thousand, one".