550221683685 has 16 divisors (see below), whose sum is σ = 880487856960. Its totient is φ = 293407176960.

The previous prime is 550221683623. The next prime is 550221683717. The reversal of 550221683685 is 586386122055.

It is a happy number.

It is not a de Polignac number, because 550221683685 - 2⁶ = 550221683621 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2671636 + ... + 2870205.

It is an arithmetic number, because the mean of its divisors is an integer number (55030491060).

Almost surely, 2^550221683685 is an apocalyptic number.

It is an amenable number.

550221683685 is a deficient number, since it is larger than the sum of its proper divisors (330266173275).

550221683685 is a wasteful number, since it uses less digits than its factorization.

550221683685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5548468.

The product of its (nonzero) digits is 3456000, while the sum is 51.

The spelling of 550221683685 in words is "five hundred fifty billion, two hundred twenty-one million, six hundred eighty-three thousand, six hundred eighty-five".