120353503555 has 16 divisors (see below), whose sum is σ = 146882973888. Its totient is φ = 94645584000.

The previous prime is 120353503507. The next prime is 120353503559. The reversal of 120353503555 is 555305353021.

It is not a de Polignac number, because 120353503555 - 2²³ = 120345114947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120353503559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 372690 + ... + 616120.

It is an arithmetic number, because the mean of its divisors is an integer number (9180185868).

Almost surely, 2^120353503555 is an apocalyptic number.

120353503555 is a deficient number, since it is larger than the sum of its proper divisors (26529470333).

120353503555 is a wasteful number, since it uses less digits than its factorization.

120353503555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245118.

The product of its (nonzero) digits is 168750, while the sum is 37.

Adding to 120353503555 its reverse (555305353021), we get a palindrome (675658856576).

The spelling of 120353503555 in words is "one hundred twenty billion, three hundred fifty-three million, five hundred three thousand, five hundred fifty-five".