163387445760 has 1280 divisors, whose sum is σ = 734438707200. Its totient is φ = 33861058560.

The previous prime is 163387445713. The next prime is 163387445779. The reversal of 163387445760 is 67544783361.

It is a happy number.

163387445760 is a `hidden beast` number, since 1 + 63 + 3 + 8 + 7 + 4 + 4 + 576 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1280).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 163387445697 and 163387445706.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 431101251 + ... + 431101629.

It is an arithmetic number, because the mean of its divisors is an integer number (573780240).

Almost surely, 2^163387445760 is an apocalyptic number.

163387445760 is a gapful number since it is divisible by the number (10) 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 163387445760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (367219353600).

163387445760 is an abundant number, since it is smaller than the sum of its proper divisors (571051261440).

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

163387445760 is an frugal number, since it uses more digits than its factorization.

163387445760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441 (or 407 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 54.

The spelling of 163387445760 in words is "one hundred sixty-three billion, three hundred eighty-seven million, four hundred forty-five thousand, seven hundred sixty".