609881287680 has 704 divisors, whose sum is σ = 2534816148480. Its totient is φ = 136150253568.

The previous prime is 609881287669. The next prime is 609881287709. The reversal of 609881287680 is 86782188906.

609881287680 is a `hidden beast` number, since 609 + 8 + 8 + 12 + 8 + 7 + 6 + 8 + 0 = 666.

609881287680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 41602912 + ... + 41617568.

It is an arithmetic number, because the mean of its divisors is an integer number (3600591120).

Almost surely, 2^609881287680 is an apocalyptic number.

609881287680 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 609881287680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1267408074240).

609881287680 is an abundant number, since it is smaller than the sum of its proper divisors (1924934860800).

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

609881287680 is a wasteful number, since it uses less digits than its factorization.

609881287680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14741 (or 14717 counting only the distinct ones).

The product of its (nonzero) digits is 18579456, while the sum is 63.

The spelling of 609881287680 in words is "six hundred nine billion, eight hundred eighty-one million, two hundred eighty-seven thousand, six hundred eighty".