550551656556 has 72 divisors (see below), whose sum is σ = 1520485429008. Its totient is φ = 166581360000.

The previous prime is 550551656521. The next prime is 550551656597. The reversal of 550551656556 is 655656155055.

It is a super-2 number, since 2×550551656556² (a number of 24 digits) contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 789895 + ... + 1313406.

Almost surely, 2^550551656556 is an apocalyptic number.

It is an amenable number.

550551656556 is an abundant number, since it is smaller than the sum of its proper divisors (969933772452).

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

550551656556 is a wasteful number, since it uses less digits than its factorization.

550551656556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2103983 (or 2103978 counting only the distinct ones).

The product of its (nonzero) digits is 16875000, while the sum is 54.

The spelling of 550551656556 in words is "five hundred fifty billion, five hundred fifty-one million, six hundred fifty-six thousand, five hundred fifty-six".