163604432544605 has 16 divisors (see below), whose sum is σ = 211708794388224. Its totient is φ = 120654707976000.

The previous prime is 163604432544601. The next prime is 163604432544659. The reversal of 163604432544605 is 506445234406361.

It is not a de Polignac number, because 163604432544605 - 2² = 163604432544601 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 (163604432544601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1675711019 + ... + 1675808648.

It is an arithmetic number, because the mean of its divisors is an integer number (13231799649264).

Almost surely, 2^{163604432544605} is an apocalyptic number.

It is an amenable number.

163604432544605 is a deficient number, since it is larger than the sum of its proper divisors (48104361843619).

163604432544605 is a wasteful number, since it uses less digits than its factorization.

163604432544605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3351520436.

The product of its (nonzero) digits is 24883200, while the sum is 53.

The spelling of 163604432544605 in words is "one hundred sixty-three trillion, six hundred four billion, four hundred thirty-two million, five hundred forty-four thousand, six hundred five".