511560222656 has 84 divisors (see below), whose sum is σ = 1182838122000. Its totient is φ = 218873281536.

The previous prime is 511560222647. The next prime is 511560222709. The reversal of 511560222656 is 656222065115.

It is a super-2 number, since 2×511560222656² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1742300 + ... + 2014628.

Almost surely, 2^511560222656 is an apocalyptic number.

511560222656 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 511560222656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (591419061000).

511560222656 is an abundant number, since it is smaller than the sum of its proper divisors (671277899344).

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

511560222656 is a wasteful number, since it uses less digits than its factorization.

511560222656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272954 (or 272937 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 41.

The spelling of 511560222656 in words is "five hundred eleven billion, five hundred sixty million, two hundred twenty-two thousand, six hundred fifty-six".