163004400000 has 1344 divisors, whose sum is σ = 670615046640. Its totient is φ = 39191040000.

The previous prime is 163004399983. The next prime is 163004400017. The reversal of 163004400000 is 4400361.

It is an interprime number because it is at equal distance from previous prime (163004399983) and next prime (163004400017).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 3790799979 + ... + 3790800021.

Almost surely, 2^163004400000 is an apocalyptic number.

163004400000 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 163004400000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (335307523320).

163004400000 is an abundant number, since it is smaller than the sum of its proper divisors (507610646640).

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

163004400000 is an frugal number, since it uses more digits than its factorization.

163004400000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113 (or 66 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 163004400000 its reverse (4400361), we get a palindrome (163008800361).

The spelling of 163004400000 in words is "one hundred sixty-three billion, four million, four hundred thousand".