556581649936 has 45 divisors (see below), whose sum is σ = 1167791344461. Its totient is φ = 256865933376.

The previous prime is 556581649873. The next prime is 556581649973. The reversal of 556581649936 is 639946185655.

The square root of 556581649936 is 746044.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 82334563600 + 474247086336 = 286940^2 + 688656^2 .

It is a super-5 number, since 5×556581649936⁵ (a number of 60 digits) contains 55555 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 38787115 + ... + 38801461.

Almost surely, 2^556581649936 is an apocalyptic number.

556581649936 is the 746044-th square number.

It is an amenable number.

556581649936 is an abundant number, since it is smaller than the sum of its proper divisors (611209694525).

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

556581649936 is an frugal number, since it uses more digits than its factorization.

556581649936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28728 (or 14362 counting only the distinct ones).

The product of its digits is 209952000, while the sum is 67.

The spelling of 556581649936 in words is "five hundred fifty-six billion, five hundred eighty-one million, six hundred forty-nine thousand, nine hundred thirty-six".