550355431131 has 48 divisors (see below), whose sum is σ = 870164830080. Its totient is φ = 332420352000.

The previous prime is 550355431117. The next prime is 550355431193. The reversal of 550355431131 is 131134553055.

550355431131 is a `hidden beast` number, since 5 + 50 + 35 + 543 + 1 + 1 + 31 = 666.

It is not a de Polignac number, because 550355431131 - 2¹¹ = 550355429083 is a prime.

It is a super-2 number, since 2×550355431131² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (550355431331) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 45249691 + ... + 45261851.

It is an arithmetic number, because the mean of its divisors is an integer number (18128433960).

Almost surely, 2^550355431131 is an apocalyptic number.

550355431131 is a deficient number, since it is larger than the sum of its proper divisors (319809398949).

550355431131 is a wasteful number, since it uses less digits than its factorization.

550355431131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13688 (or 13685 counting only the distinct ones).

The product of its (nonzero) digits is 67500, while the sum is 36.

Adding to 550355431131 its reverse (131134553055), we get a palindrome (681489984186).

The spelling of 550355431131 in words is "five hundred fifty billion, three hundred fifty-five million, four hundred thirty-one thousand, one hundred thirty-one".