163545400352105 has 4 divisors (see below), whose sum is σ = 196254480422532. Its totient is φ = 130836320281680.

The previous prime is 163545400352083. The next prime is 163545400352119. The reversal of 163545400352105 is 501253004545361.

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 100189149359209 + 63356250992896 = 10009453^2 + 7959664^2 .

It is not a de Polignac number, because 163545400352105 - 2⁶ = 163545400352041 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16354540035206 + ... + 16354540035215.

It is an arithmetic number, because the mean of its divisors is an integer number (49063620105633).

Almost surely, 2^{163545400352105} is an apocalyptic number.

It is an amenable number.

163545400352105 is a deficient number, since it is larger than the sum of its proper divisors (32709080070427).

163545400352105 is an equidigital number, since it uses as much as digits as its factorization.

163545400352105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32709080070426.

The product of its (nonzero) digits is 1080000, while the sum is 44.

Adding to 163545400352105 its reverse (501253004545361), we get a palindrome (664798404897466).

The spelling of 163545400352105 in words is "one hundred sixty-three trillion, five hundred forty-five billion, four hundred million, three hundred fifty-two thousand, one hundred five".