163220506044505 has 32 divisors (see below), whose sum is σ = 246943745008128. Its totient is φ = 100793365286400.

The previous prime is 163220506044481. The next prime is 163220506044523. The reversal of 163220506044505 is 505440605022361.

It is not a de Polignac number, because 163220506044505 - 2¹⁹ = 163220505520217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4374693381 + ... + 4374730690.

It is an arithmetic number, because the mean of its divisors is an integer number (7716992031504).

Almost surely, 2^{163220506044505} is an apocalyptic number.

It is an amenable number.

163220506044505 is a deficient number, since it is larger than the sum of its proper divisors (83723238963623).

163220506044505 is a wasteful number, since it uses less digits than its factorization.

163220506044505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8749424137.

The product of its (nonzero) digits is 864000, while the sum is 43.

The spelling of 163220506044505 in words is "one hundred sixty-three trillion, two hundred twenty billion, five hundred six million, forty-four thousand, five hundred five".