120440555500 has 24 divisors (see below), whose sum is σ = 263042174304. Its totient is φ = 48176222000.

The previous prime is 120440555489. The next prime is 120440555519. The reversal of 120440555500 is 5555044021.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120440056 + ... + 120441055.

It is an arithmetic number, because the mean of its divisors is an integer number (10960090596).

Almost surely, 2^120440555500 is an apocalyptic number.

120440555500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120440555500 is an abundant number, since it is smaller than the sum of its proper divisors (142601618804).

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

120440555500 is a wasteful number, since it uses less digits than its factorization.

120440555500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240881130 (or 240881118 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 31.

Adding to 120440555500 its reverse (5555044021), we get a palindrome (125995599521).

The spelling of 120440555500 in words is "one hundred twenty billion, four hundred forty million, five hundred fifty-five thousand, five hundred".