120309066550 has 24 divisors (see below), whose sum is σ = 224013771576. Its totient is φ = 48072248640.

The previous prime is 120309066547. The next prime is 120309066571. The reversal of 120309066550 is 55660903021.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1237132 + ... + 1330831.

It is an arithmetic number, because the mean of its divisors is an integer number (9333907149).

Almost surely, 2^120309066550 is an apocalyptic number.

120309066550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

120309066550 is a deficient number, since it is larger than the sum of its proper divisors (103704705026).

120309066550 is a wasteful number, since it uses less digits than its factorization.

120309066550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2568912 (or 2568907 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 37.

Adding to 120309066550 its reverse (55660903021), we get a palindrome (175969969571).

The spelling of 120309066550 in words is "one hundred twenty billion, three hundred nine million, sixty-six thousand, five hundred fifty".