550016061661 has 8 divisors (see below), whose sum is σ = 606759292800. Its totient is φ = 494396459040.

The previous prime is 550016061619. The next prime is 550016061667. The reversal of 550016061661 is 166160610055.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 550016061661 - 2¹⁹ = 550015537373 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 550016061661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550016061667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 280906101 + ... + 280908058.

It is an arithmetic number, because the mean of its divisors is an integer number (75844911600).

Almost surely, 2^550016061661 is an apocalyptic number.

It is an amenable number.

550016061661 is a deficient number, since it is larger than the sum of its proper divisors (56743231139).

550016061661 is a wasteful number, since it uses less digits than its factorization.

550016061661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561814259.

The product of its (nonzero) digits is 32400, while the sum is 37.

The spelling of 550016061661 in words is "five hundred fifty billion, sixteen million, sixty-one thousand, six hundred sixty-one".