550121439566 has 8 divisors (see below), whose sum is σ = 825367315680. Its totient is φ = 274999001008.

The previous prime is 550121439521. The next prime is 550121439587. The reversal of 550121439566 is 665934121055.

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

It is a self number, because there is not a number n which added to its sum of digits gives 550121439566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30848246 + ... + 30866073.

It is an arithmetic number, because the mean of its divisors is an integer number (103170914460).

Almost surely, 2^550121439566 is an apocalyptic number.

550121439566 is a deficient number, since it is larger than the sum of its proper divisors (275245876114).

550121439566 is a wasteful number, since it uses less digits than its factorization.

550121439566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61718778.

The product of its (nonzero) digits is 972000, while the sum is 47.

The spelling of 550121439566 in words is "five hundred fifty billion, one hundred twenty-one million, four hundred thirty-nine thousand, five hundred sixty-six".