609653329920 has 312 divisors, whose sum is σ = 2191491696576. Its totient is φ = 162572894208.

The previous prime is 609653329907. The next prime is 609653329991. The reversal of 609653329920 is 29923356906.

609653329920 is a `hidden beast` number, since 60 + 9 + 6 + 533 + 29 + 9 + 20 = 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 polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4915389 + ... + 5037891.

It is an arithmetic number, because the mean of its divisors is an integer number (7024011848).

Almost surely, 2^609653329920 is an apocalyptic number.

609653329920 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 609653329920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1095745848288).

609653329920 is an abundant number, since it is smaller than the sum of its proper divisors (1581838366656).

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

609653329920 is an equidigital number, since it uses as much as digits as its factorization.

609653329920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122547 (or 122513 counting only the distinct ones).

The product of its (nonzero) digits is 4723920, while the sum is 54.

The spelling of 609653329920 in words is "six hundred nine billion, six hundred fifty-three million, three hundred twenty-nine thousand, nine hundred twenty".