550221564606 has 32 divisors (see below), whose sum is σ = 1312329696768. Its totient is φ = 150371110560.

The previous prime is 550221564593. The next prime is 550221564631. The reversal of 550221564606 is 606465122055.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 284792805 + ... + 284794736.

It is an arithmetic number, because the mean of its divisors is an integer number (41010303024).

Almost surely, 2^550221564606 is an apocalyptic number.

550221564606 is an abundant number, since it is smaller than the sum of its proper divisors (762108132162).

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

550221564606 is a wasteful number, since it uses less digits than its factorization.

550221564606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569587576.

The product of its (nonzero) digits is 432000, while the sum is 42.

The spelling of 550221564606 in words is "five hundred fifty billion, two hundred twenty-one million, five hundred sixty-four thousand, six hundred six".