120440555355 has 64 divisors (see below), whose sum is σ = 211089162240. Its totient is φ = 58452028800.

The previous prime is 120440555351. The next prime is 120440555383. The reversal of 120440555355 is 553555044021.

It is not a de Polignac number, because 120440555355 - 2² = 120440555351 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120440555351) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 535570 + ... + 726440.

It is an arithmetic number, because the mean of its divisors is an integer number (3298268160).

Almost surely, 2^120440555355 is an apocalyptic number.

120440555355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

120440555355 is a deficient number, since it is larger than the sum of its proper divisors (90648606885).

120440555355 is a wasteful number, since it uses less digits than its factorization.

120440555355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190992.

The product of its (nonzero) digits is 300000, while the sum is 39.

Adding to 120440555355 its reverse (553555044021), we get a palindrome (673995599376).

The spelling of 120440555355 in words is "one hundred twenty billion, four hundred forty million, five hundred fifty-five thousand, three hundred fifty-five".