550979598649 has 4 divisors (see below), whose sum is σ = 551180030500. Its totient is φ = 550779166800.

The previous prime is 550979598619. The next prime is 550979598667. The reversal of 550979598649 is 946895979055.

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 224216455225 + 326763143424 = 473515^2 + 571632^2 .

It is a cyclic number.

It is not a de Polignac number, because 550979598649 - 2⁹ = 550979598137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550979598619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100211802 + ... + 100217299.

It is an arithmetic number, because the mean of its divisors is an integer number (137795007625).

Almost surely, 2^550979598649 is an apocalyptic number.

It is an amenable number.

550979598649 is a deficient number, since it is larger than the sum of its proper divisors (200431851).

550979598649 is a wasteful number, since it uses less digits than its factorization.

550979598649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200431850.

The product of its (nonzero) digits is 1102248000, while the sum is 76.

The spelling of 550979598649 in words is "five hundred fifty billion, nine hundred seventy-nine million, five hundred ninety-eight thousand, six hundred forty-nine".