120013445506 has 4 divisors (see below), whose sum is σ = 180020168262. Its totient is φ = 60006722752.

The previous prime is 120013445483. The next prime is 120013445507. The reversal of 120013445506 is 605544310021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 97615629225 + 22397816281 = 312435^2 + 149659^2 .

It is not an unprimeable number, because it can be changed into a prime (120013445507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30003361375 + ... + 30003361378.

Almost surely, 2^120013445506 is an apocalyptic number.

120013445506 is a deficient number, since it is larger than the sum of its proper divisors (60006722756).

120013445506 is an equidigital number, since it uses as much as digits as its factorization.

120013445506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60006722755.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 120013445506 its reverse (605544310021), we get a palindrome (725557755527).

The spelling of 120013445506 in words is "one hundred twenty billion, thirteen million, four hundred forty-five thousand, five hundred six".