550815689089 has 4 divisors (see below), whose sum is σ = 553179705156. Its totient is φ = 548451673024.

The previous prime is 550815689077. The next prime is 550815689117. The reversal of 550815689089 is 980986518055.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 980986518055 = 5 ⋅196197303611.

It can be written as a sum of positive squares in 2 ways, for example, as 69780505600 + 481035183489 = 264160^2 + 693567^2 .

It is a cyclic number.

It is not a de Polignac number, because 550815689089 - 2⁵ = 550815689057 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 550815689089.

It is not an unprimeable number, because it can be changed into a prime (550815659089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1182007684 + ... + 1182008149.

It is an arithmetic number, because the mean of its divisors is an integer number (138294926289).

Almost surely, 2^550815689089 is an apocalyptic number.

It is an amenable number.

550815689089 is a deficient number, since it is larger than the sum of its proper divisors (2364016067).

550815689089 is a wasteful number, since it uses less digits than its factorization.

550815689089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2364016066.

The product of its (nonzero) digits is 31104000, while the sum is 64.

The spelling of 550815689089 in words is "five hundred fifty billion, eight hundred fifteen million, six hundred eighty-nine thousand, eighty-nine".