163544615522 has 4 divisors (see below), whose sum is σ = 245316923286. Its totient is φ = 81772307760.

The previous prime is 163544615513. The next prime is 163544615543. The reversal of 163544615522 is 225516445361.

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

It can be written as a sum of positive squares in only one way, i.e., 162102059161 + 1442556361 = 402619^2 + 37981^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40886153879 + ... + 40886153882.

Almost surely, 2^163544615522 is an apocalyptic number.

163544615522 is a deficient number, since it is larger than the sum of its proper divisors (81772307764).

163544615522 is an equidigital number, since it uses as much as digits as its factorization.

163544615522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81772307763.

The product of its digits is 864000, while the sum is 44.

The spelling of 163544615522 in words is "one hundred sixty-three billion, five hundred forty-four million, six hundred fifteen thousand, five hundred twenty-two".