163215949117 has 16 divisors (see below), whose sum is σ = 179098380720. Its totient is φ = 147821184000.

The previous prime is 163215949097. The next prime is 163215949157. The reversal of 163215949117 is 711949512361.

163215949117 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 3188747961 + 160027201156 = 56469^2 + 400034^2 .

It is a cyclic number.

It is not a de Polignac number, because 163215949117 - 2¹⁵ = 163215916349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163215949157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61359 + ... + 574627.

It is an arithmetic number, because the mean of its divisors is an integer number (11193648795).

Almost surely, 2^163215949117 is an apocalyptic number.

It is an amenable number.

163215949117 is a deficient number, since it is larger than the sum of its proper divisors (15882431603).

163215949117 is a wasteful number, since it uses less digits than its factorization.

163215949117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513744.

The product of its digits is 408240, while the sum is 49.

The spelling of 163215949117 in words is "one hundred sixty-three billion, two hundred fifteen million, nine hundred forty-nine thousand, one hundred seventeen".