120353503506 has 32 divisors (see below), whose sum is σ = 251342552448. Its totient is φ = 38347605120.

The previous prime is 120353503463. The next prime is 120353503507. The reversal of 120353503506 is 605305353021.

It is not an unprimeable number, because it can be changed into a prime (120353503507) 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, 90061 + ... + 498816.

It is an arithmetic number, because the mean of its divisors is an integer number (7854454764).

Almost surely, 2^120353503506 is an apocalyptic number.

120353503506 is an abundant number, since it is smaller than the sum of its proper divisors (130989048942).

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

120353503506 is a wasteful number, since it uses less digits than its factorization.

120353503506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590386.

The product of its (nonzero) digits is 40500, while the sum is 33.

Adding to 120353503506 its reverse (605305353021), we get a palindrome (725658856527).

The spelling of 120353503506 in words is "one hundred twenty billion, three hundred fifty-three million, five hundred three thousand, five hundred six".