550161055510561 has 32 divisors (see below), whose sum is σ = 636047959438080. Its totient is φ = 470305534617600.

The previous prime is 550161055510531. The next prime is 550161055510567. The reversal of 550161055510561 is 165015550161055.

It is a happy number.

It is not a de Polignac number, because 550161055510561 - 2⁹ = 550161055510049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550161055510567) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1856753820 + ... + 1857050098.

It is an arithmetic number, because the mean of its divisors is an integer number (19876498732440).

Almost surely, 2^{550161055510561} is an apocalyptic number.

It is an amenable number.

550161055510561 is a deficient number, since it is larger than the sum of its proper divisors (85886903927519).

550161055510561 is a wasteful number, since it uses less digits than its factorization.

550161055510561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305145.

The product of its (nonzero) digits is 562500, while the sum is 46.

The spelling of 550161055510561 in words is "five hundred fifty trillion, one hundred sixty-one billion, fifty-five million, five hundred ten thousand, five hundred sixty-one".