605809269817808 has 40 divisors (see below), whose sum is σ = 1341438175646400. Its totient is φ = 259631893128960.

The previous prime is 605809269817757. The next prime is 605809269817813. The reversal of 605809269817808 is 808718962908506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39482543 + ... + 52635441.

It is an arithmetic number, because the mean of its divisors is an integer number (33535954391160).

Almost surely, 2^{605809269817808} is an apocalyptic number.

It is an amenable number.

605809269817808 is an abundant number, since it is smaller than the sum of its proper divisors (735628905828592).

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

605809269817808 is a wasteful number, since it uses less digits than its factorization.

605809269817808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13564155 (or 13564149 counting only the distinct ones).

The product of its (nonzero) digits is 836075520, while the sum is 77.

The spelling of 605809269817808 in words is "six hundred five trillion, eight hundred nine billion, two hundred sixty-nine million, eight hundred seventeen thousand, eight hundred eight".