550661440831 has 8 divisors (see below), whose sum is σ = 553687500960. Its totient is φ = 547642444032.

The previous prime is 550661440789. The next prime is 550661440883. The reversal of 550661440831 is 138044166055.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 550661440831 - 2²³ = 550653052223 is a prime.

It is a super-2 number, since 2×550661440831² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550661440031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1609446 + ... + 1921363.

It is an arithmetic number, because the mean of its divisors is an integer number (69210937620).

Almost surely, 2^550661440831 is an apocalyptic number.

550661440831 is a deficient number, since it is larger than the sum of its proper divisors (3026060129).

550661440831 is a wasteful number, since it uses less digits than its factorization.

550661440831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3531665.

The product of its (nonzero) digits is 345600, while the sum is 43.

The spelling of 550661440831 in words is "five hundred fifty billion, six hundred sixty-one million, four hundred forty thousand, eight hundred thirty-one".