550946889566 has 64 divisors (see below), whose sum is σ = 917995161600. Its totient is φ = 247052786400.

The previous prime is 550946889553. The next prime is 550946889587. The reversal of 550946889566 is 665988649055.

It is a Harshad number since it is a multiple of its sum of digits (71).

It is a self number, because there is not a number n which added to its sum of digits gives 550946889566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6804581 + ... + 6885071.

It is an arithmetic number, because the mean of its divisors is an integer number (14343674400).

Almost surely, 2^550946889566 is an apocalyptic number.

550946889566 is a deficient number, since it is larger than the sum of its proper divisors (367048272034).

550946889566 is a wasteful number, since it uses less digits than its factorization.

550946889566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80685.

The product of its (nonzero) digits is 559872000, while the sum is 71.

The spelling of 550946889566 in words is "five hundred fifty billion, nine hundred forty-six million, eight hundred eighty-nine thousand, five hundred sixty-six".