163620620800 has 480 divisors, whose sum is σ = 528345683712. Its totient is φ = 48731258880.

The previous prime is 163620620753. The next prime is 163620620827. The reversal of 163620620800 is 8026026361.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19797469 + ... + 19805731.

Almost surely, 2^163620620800 is an apocalyptic number.

163620620800 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 163620620800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264172841856).

163620620800 is an abundant number, since it is smaller than the sum of its proper divisors (364725062912).

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

163620620800 is a wasteful number, since it uses less digits than its factorization.

163620620800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8328 (or 8307 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The spelling of 163620620800 in words is "one hundred sixty-three billion, six hundred twenty million, six hundred twenty thousand, eight hundred".