120355321455 has 12 divisors (see below), whose sum is σ = 208615890600. Its totient is φ = 64189504752.

The previous prime is 120355321453. The next prime is 120355321511. The reversal of 120355321455 is 554123553021.

120355321455 is a `hidden beast` number, since 120 + 3 + 55 + 32 + 1 + 455 = 666.

It is not a de Polignac number, because 120355321455 - 2¹ = 120355321453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120355321453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1337281305 + ... + 1337281394.

It is an arithmetic number, because the mean of its divisors is an integer number (17384657550).

Almost surely, 2^120355321455 is an apocalyptic number.

120355321455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

120355321455 is a deficient number, since it is larger than the sum of its proper divisors (88260569145).

120355321455 is a wasteful number, since it uses less digits than its factorization.

120355321455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2674562710 (or 2674562707 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

Adding to 120355321455 its reverse (554123553021), we get a palindrome (674478874476).

The spelling of 120355321455 in words is "one hundred twenty billion, three hundred fifty-five million, three hundred twenty-one thousand, four hundred fifty-five".