550990308961 has 4 divisors (see below), whose sum is σ = 562713507072. Its totient is φ = 539267110852.

The previous prime is 550990308949. The next prime is 550990308971. The reversal of 550990308961 is 169803099055.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 169803099055 = 5 ⋅33960619811.

It is not a de Polignac number, because 550990308961 - 2²³ = 550981920353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550990308941) 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, 5861598985 + ... + 5861599078.

It is an arithmetic number, because the mean of its divisors is an integer number (140678376768).

Almost surely, 2^550990308961 is an apocalyptic number.

It is an amenable number.

550990308961 is a deficient number, since it is larger than the sum of its proper divisors (11723198111).

550990308961 is a wasteful number, since it uses less digits than its factorization.

550990308961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11723198110.

The product of its (nonzero) digits is 2624400, while the sum is 55.

The spelling of 550990308961 in words is "five hundred fifty billion, nine hundred ninety million, three hundred eight thousand, nine hundred sixty-one".