163366443504 has 480 divisors, whose sum is σ = 532783899648. Its totient is φ = 46244352000.

The previous prime is 163366443503. The next prime is 163366443529. The reversal of 163366443504 is 405344663361.

163366443504 is a `hidden beast` number, since 1 + 633 + 6 + 6 + 4 + 4 + 3 + 5 + 0 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 163366443504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163366443503) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 354373834 + ... + 354374294.

Almost surely, 2^163366443504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163366443504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266391949824).

163366443504 is an abundant number, since it is smaller than the sum of its proper divisors (369417456144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163366443504 is a wasteful number, since it uses less digits than its factorization.

163366443504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717 (or 708 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 45.

The spelling of 163366443504 in words is "one hundred sixty-three billion, three hundred sixty-six million, four hundred forty-three thousand, five hundred four".