609509311488 has 704 divisors, whose sum is σ = 2305698877440. Its totient is φ = 154430668800.

The previous prime is 609509311471. The next prime is 609509311511. The reversal of 609509311488 is 884113905906.

609509311488 is a `hidden beast` number, since 60 + 9 + 5 + 0 + 93 + 11 + 488 = 666.

It is a tau number, because it is divible by the number of its divisors (704).

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 63 ways as a sum of consecutive naturals, for example, 87281245 + ... + 87288227.

Almost surely, 2^609509311488 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 609509311488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1152849438720).

609509311488 is an abundant number, since it is smaller than the sum of its proper divisors (1696189565952).

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

609509311488 is a wasteful number, since it uses less digits than its factorization.

609509311488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7071 (or 7047 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The spelling of 609509311488 in words is "six hundred nine billion, five hundred nine million, three hundred eleven thousand, four hundred eighty-eight".