609934918656 has 704 divisors, whose sum is σ = 2023287552000. Its totient is φ = 159486050304.

The previous prime is 609934918639. The next prime is 609934918657. The reversal of 609934918656 is 656819439906.

It is not an unprimeable number, because it can be changed into a prime (609934918657) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2617746316 + ... + 2617746548.

It is an arithmetic number, because the mean of its divisors is an integer number (2873988000).

Almost surely, 2^609934918656 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 609934918656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1011643776000).

609934918656 is an abundant number, since it is smaller than the sum of its proper divisors (1413352633344).

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

609934918656 is a wasteful number, since it uses less digits than its factorization.

609934918656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474 (or 456 counting only the distinct ones).

The product of its (nonzero) digits is 75582720, while the sum is 66.

The spelling of 609934918656 in words is "six hundred nine billion, nine hundred thirty-four million, nine hundred eighteen thousand, six hundred fifty-six".