545104661220 has 288 divisors, whose sum is σ = 1922790804480. Its totient is φ = 122426173440.

The previous prime is 545104661177. The next prime is 545104661221. The reversal of 545104661220 is 22166401545.

545104661220 is a `hidden beast` number, since 5 + 4 + 5 + 10 + 4 + 6 + 612 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (545104661221) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 24731605 + ... + 24753635.

It is an arithmetic number, because the mean of its divisors is an integer number (6676356960).

Almost surely, 2^545104661220 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 545104661220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (961395402240).

545104661220 is an abundant number, since it is smaller than the sum of its proper divisors (1377686143260).

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

545104661220 is a wasteful number, since it uses less digits than its factorization.

545104661220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22395 (or 22390 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 545104661220 in words is "five hundred forty-five billion, one hundred four million, six hundred sixty-one thousand, two hundred twenty".