545312320000 has 400 divisors, whose sum is σ = 1606414182912. Its totient is φ = 180910080000.

The previous prime is 545312319983. The next prime is 545312320019. The reversal of 545312320000 is 23213545.

It is a tau number, because it is divible by the number of its divisors (400).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 69436074 + ... + 69443926.

Almost surely, 2^545312320000 is an apocalyptic number.

545312320000 is a gapful number since it is divisible by the number (50) 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 545312320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (803207091456).

545312320000 is an abundant number, since it is smaller than the sum of its proper divisors (1061101862912).

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

545312320000 is an frugal number, since it uses more digits than its factorization.

545312320000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7929 (or 7898 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

Adding to 545312320000 its reverse (23213545), we get a palindrome (545335533545).

The spelling of 545312320000 in words is "five hundred forty-five billion, three hundred twelve million, three hundred twenty thousand".