163242765504 has 392 divisors, whose sum is σ = 597775690400. Its totient is φ = 43051917312.

The previous prime is 163242765473. The next prime is 163242765583. The reversal of 163242765504 is 405567242361.

163242765504 is a `hidden beast` number, since 1 + 6 + 3 + 24 + 2 + 76 + 550 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 163242765504.

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 in 55 ways as a sum of consecutive naturals, for example, 4226472 + ... + 4264920.

Almost surely, 2^163242765504 is an apocalyptic number.

163242765504 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163242765504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298887845200).

163242765504 is an abundant number, since it is smaller than the sum of its proper divisors (434532924896).

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

163242765504 is an equidigital number, since it uses as much as digits as its factorization.

163242765504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38499 (or 38474 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 45.

The spelling of 163242765504 in words is "one hundred sixty-three billion, two hundred forty-two million, seven hundred sixty-five thousand, five hundred four".