505006156656 has 80 divisors (see below), whose sum is σ = 1474123507200. Its totient is φ = 165482235072.

The previous prime is 505006156609. The next prime is 505006156679. The reversal of 505006156656 is 656651600505.

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, 9881256 + ... + 9932231.

It is an arithmetic number, because the mean of its divisors is an integer number (18426543840).

Almost surely, 2^505006156656 is an apocalyptic number.

It is an amenable number.

505006156656 is an abundant number, since it is smaller than the sum of its proper divisors (969117350544).

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

505006156656 is a wasteful number, since it uses less digits than its factorization.

505006156656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19813563 (or 19813551 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 45.

The spelling of 505006156656 in words is "five hundred five billion, six million, one hundred fifty-six thousand, six hundred fifty-six".