609505998673456 has 40 divisors (see below), whose sum is σ = 1219029155712000. Its totient is φ = 294918106205760.

The previous prime is 609505998673433. The next prime is 609505998673457. The reversal of 609505998673456 is 654376899505906.

It is a self number, because there is not a number n which added to its sum of digits gives 609505998673456.

It is not an unprimeable number, because it can be changed into a prime (609505998673457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26771445 + ... + 43996843.

It is an arithmetic number, because the mean of its divisors is an integer number (30475728892800).

Almost surely, 2^{609505998673456} is an apocalyptic number.

It is an amenable number.

609505998673456 is an abundant number, since it is smaller than the sum of its proper divisors (609523157038544).

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

609505998673456 is a wasteful number, since it uses less digits than its factorization.

609505998673456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17296777 (or 17296771 counting only the distinct ones).

The product of its (nonzero) digits is 13226976000, while the sum is 82.

The spelling of 609505998673456 in words is "six hundred nine trillion, five hundred five billion, nine hundred ninety-eight million, six hundred seventy-three thousand, four hundred fifty-six".