609520878720 has 320 divisors, whose sum is σ = 2344150864440. Its totient is φ = 150035742720.

The previous prime is 609520878713. The next prime is 609520878793. The reversal of 609520878720 is 27878025906.

It is a happy number.

609520878720 is a `hidden beast` number, since 609 + 5 + 2 + 0 + 8 + 7 + 8 + 7 + 20 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 298719088704 + 310801790016 = 546552^2 + 557496^2 .

It is a tau number, because it is divible by the number of its divisors (320).

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

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, 221700 + ... + 1126140.

Almost surely, 2^609520878720 is an apocalyptic number.

609520878720 is a gapful number since it is divisible by the number (60) 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 609520878720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1172075432220).

609520878720 is an abundant number, since it is smaller than the sum of its proper divisors (1734629985720).

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

609520878720 is a wasteful number, since it uses less digits than its factorization.

609520878720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904485 (or 904464 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 54.

The spelling of 609520878720 in words is "six hundred nine billion, five hundred twenty million, eight hundred seventy-eight thousand, seven hundred twenty".