120781430610818 has 16 divisors (see below), whose sum is σ = 181530200400120. Its totient is φ = 60271366579200.

The previous prime is 120781430610791. The next prime is 120781430610829. The reversal of 120781430610818 is 818016034187021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 110458145148649 + 10323285462169 = 10509907^2 + 3212987^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92848208 + ... + 94140068.

Almost surely, 2^{120781430610818} is an apocalyptic number.

120781430610818 is a deficient number, since it is larger than the sum of its proper divisors (60748769789302).

120781430610818 is a wasteful number, since it uses less digits than its factorization.

120781430610818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1384213.

The product of its (nonzero) digits is 516096, while the sum is 50.

Adding to 120781430610818 its reverse (818016034187021), we get a palindrome (938797464797839).

The spelling of 120781430610818 in words is "one hundred twenty trillion, seven hundred eighty-one billion, four hundred thirty million, six hundred ten thousand, eight hundred eighteen".