550880985501 has 320 divisors, whose sum is σ = 1180527575040. Its totient is φ = 246903552000.

The previous prime is 550880985491. The next prime is 550880985503. The reversal of 550880985501 is 105589088055.

550880985501 is a `hidden beast` number, since 5 + 5 + 0 + 8 + 80 + 9 + 8 + 550 + 1 = 666.

It is not a de Polignac number, because 550880985501 - 2⁷ = 550880985373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550880985503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 62446671 + ... + 62455491.

It is an arithmetic number, because the mean of its divisors is an integer number (3689148672).

Almost surely, 2^550880985501 is an apocalyptic number.

550880985501 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

550880985501 is an abundant number, since it is smaller than the sum of its proper divisors (629646589539).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

550880985501 is a wasteful number, since it uses less digits than its factorization.

550880985501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8918 (or 8909 counting only the distinct ones).

The product of its (nonzero) digits is 2880000, while the sum is 54.

The spelling of 550880985501 in words is "five hundred fifty billion, eight hundred eighty million, nine hundred eighty-five thousand, five hundred one".