609579440720 has 80 divisors (see below), whose sum is σ = 1501329712320. Its totient is φ = 229383432192.

The previous prime is 609579440699. The next prime is 609579440761. The reversal of 609579440720 is 27044975906.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2894351 + ... + 3097809.

It is an arithmetic number, because the mean of its divisors is an integer number (18766621404).

Almost surely, 2^609579440720 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 609579440720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (750664856160).

609579440720 is an abundant number, since it is smaller than the sum of its proper divisors (891750271600).

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

609579440720 is a wasteful number, since it uses less digits than its factorization.

609579440720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205692 (or 205686 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 53.

The spelling of 609579440720 in words is "six hundred nine billion, five hundred seventy-nine million, four hundred forty thousand, seven hundred twenty".