550886178817 has 4 divisors (see below), whose sum is σ = 593262038740. Its totient is φ = 508510318896.

The previous prime is 550886178781. The next prime is 550886178833. The reversal of 550886178817 is 718871688055.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 207025910001 + 343860268816 = 455001^2 + 586396^2 .

It is a cyclic number.

It is not a de Polignac number, because 550886178817 - 2³⁵ = 516526440449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550886178317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21187929942 + ... + 21187929967.

It is an arithmetic number, because the mean of its divisors is an integer number (148315509685).

It is a Proth number, since it is equal to 262683 ⋅ 2²¹ + 1 and 262683 < 2²¹.

Almost surely, 2^550886178817 is an apocalyptic number.

It is an amenable number.

550886178817 is a deficient number, since it is larger than the sum of its proper divisors (42375859923).

550886178817 is a wasteful number, since it uses less digits than its factorization.

550886178817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42375859922.

The product of its (nonzero) digits is 30105600, while the sum is 64.

The spelling of 550886178817 in words is "five hundred fifty billion, eight hundred eighty-six million, one hundred seventy-eight thousand, eight hundred seventeen".