5645563270920 has 256 divisors, whose sum is σ = 19004138092800. Its totient is φ = 1490650490880.

The previous prime is 5645563270871. The next prime is 5645563270933. The reversal of 5645563270920 is 290723655465.

It is a happy number.

5645563270920 is a `hidden beast` number, since 5 + 6 + 4 + 5 + 563 + 2 + 70 + 9 + 2 + 0 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 246940290 + ... + 246963150.

It is an arithmetic number, because the mean of its divisors is an integer number (74234914425).

Almost surely, 2^{5645563270920} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5645563270920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9502069046400).

5645563270920 is an abundant number, since it is smaller than the sum of its proper divisors (13358574821880).

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

5645563270920 is a wasteful number, since it uses less digits than its factorization.

5645563270920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25125 (or 25115 counting only the distinct ones).

The product of its (nonzero) digits is 13608000, while the sum is 54.

The spelling of 5645563270920 in words is "five trillion, six hundred forty-five billion, five hundred sixty-three million, two hundred seventy thousand, nine hundred twenty".