609857129280 has 448 divisors, whose sum is σ = 2327380623360. Its totient is φ = 132281081856.

The previous prime is 609857129269. The next prime is 609857129333. The reversal of 609857129280 is 82921758906.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (448).

It is a self number, because there is not a number n which added to its sum of digits gives 609857129280.

It is a congruent number.

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, 19613586 + ... + 19644654.

Almost surely, 2^609857129280 is an apocalyptic number.

609857129280 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 609857129280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1163690311680).

609857129280 is an abundant number, since it is smaller than the sum of its proper divisors (1717523494080).

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

609857129280 is a wasteful number, since it uses less digits than its factorization.

609857129280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31246 (or 31236 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 57.

The spelling of 609857129280 in words is "six hundred nine billion, eight hundred fifty-seven million, one hundred twenty-nine thousand, two hundred eighty".