66120306434 has 32 divisors (see below), whose sum is σ = 123538988160. Its totient is φ = 25842327552.

The previous prime is 66120306407. The next prime is 66120306463. The reversal of 66120306434 is 43460302166.

66120306434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 66120306394 and 66120306403.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2173439 + ... + 2203650.

It is an arithmetic number, because the mean of its divisors is an integer number (3860593380).

Almost surely, 2^66120306434 is an apocalyptic number.

66120306434 is a deficient number, since it is larger than the sum of its proper divisors (57418681726).

66120306434 is a wasteful number, since it uses less digits than its factorization.

66120306434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4377194.

The product of its (nonzero) digits is 62208, while the sum is 35.

The spelling of 66120306434 in words is "sixty-six billion, one hundred twenty million, three hundred six thousand, four hundred thirty-four".