550671620161 has 16 divisors (see below), whose sum is σ = 595353583440. Its totient is φ = 506322754560.

The previous prime is 550671620141. The next prime is 550671620167. The reversal of 550671620161 is 161026176055.

It can be written as a sum of positive squares in 8 ways, for example, as 55245681936 + 495425938225 = 235044^2 + 703865^2 .

It is a cyclic number.

It is not a de Polignac number, because 550671620161 - 2²¹ = 550669523009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550671620167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10820371 + ... + 10871143.

It is an arithmetic number, because the mean of its divisors is an integer number (37209598965).

Almost surely, 2^550671620161 is an apocalyptic number.

It is an amenable number.

550671620161 is a deficient number, since it is larger than the sum of its proper divisors (44681963279).

550671620161 is a wasteful number, since it uses less digits than its factorization.

550671620161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54036.

The product of its (nonzero) digits is 75600, while the sum is 40.

The spelling of 550671620161 in words is "five hundred fifty billion, six hundred seventy-one million, six hundred twenty thousand, one hundred sixty-one".