550129180055 has 32 divisors (see below), whose sum is σ = 813066436224. Its totient is φ = 347970226176.

The previous prime is 550129180021. The next prime is 550129180067. The reversal of 550129180055 is 550081921055.

It is a cyclic number.

It is not a de Polignac number, because 550129180055 - 2³⁶ = 481409703319 is a prime.

It is a super-2 number, since 2×550129180055² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 550129179994 and 550129180021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 230147 + ... + 1073883.

It is an arithmetic number, because the mean of its divisors is an integer number (25408326132).

Almost surely, 2^550129180055 is an apocalyptic number.

550129180055 is a deficient number, since it is larger than the sum of its proper divisors (262937256169).

550129180055 is a wasteful number, since it uses less digits than its factorization.

550129180055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845195.

The product of its (nonzero) digits is 90000, while the sum is 41.

The spelling of 550129180055 in words is "five hundred fifty billion, one hundred twenty-nine million, one hundred eighty thousand, fifty-five".