163445464612550 has 24 divisors (see below), whose sum is σ = 304869778275096. Its totient is φ = 65192978512640.

The previous prime is 163445464612519. The next prime is 163445464612627. The reversal of 163445464612550 is 55216464544361.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4630165484 + ... + 4630200783.

It is an arithmetic number, because the mean of its divisors is an integer number (12702907428129).

Almost surely, 2^{163445464612550} is an apocalyptic number.

163445464612550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

163445464612550 is a deficient number, since it is larger than the sum of its proper divisors (141424313662546).

163445464612550 is a wasteful number, since it uses less digits than its factorization.

163445464612550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9260366632 (or 9260366627 counting only the distinct ones).

The product of its (nonzero) digits is 41472000, while the sum is 56.

The spelling of 163445464612550 in words is "one hundred sixty-three trillion, four hundred forty-five billion, four hundred sixty-four million, six hundred twelve thousand, five hundred fifty".