550555656516 has 18 divisors (see below), whose sum is σ = 1391682354062. Its totient is φ = 183518552160.

The previous prime is 550555656509. The next prime is 550555656583. The reversal of 550555656516 is 615656555055.

550555656516 is a `hidden beast` number, since 5 + 5 + 0 + 5 + 5 + 565 + 65 + 16 = 666.

It can be written as a sum of positive squares in only one way, i.e., 283339031616 + 267216624900 = 532296^2 + 516930^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×550555656516² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7646606305 + ... + 7646606376.

Almost surely, 2^550555656516 is an apocalyptic number.

It is an amenable number.

550555656516 is an abundant number, since it is smaller than the sum of its proper divisors (841126697546).

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

550555656516 is a wasteful number, since it uses less digits than its factorization.

550555656516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15293212691 (or 15293212686 counting only the distinct ones).

The product of its (nonzero) digits is 16875000, while the sum is 54.

The spelling of 550555656516 in words is "five hundred fifty billion, five hundred fifty-five million, six hundred fifty-six thousand, five hundred sixteen".