66740734067396 has 6 divisors (see below), whose sum is σ = 116796284617950. Its totient is φ = 33370367033696.

The previous prime is 66740734067383. The next prime is 66740734067459. The reversal of 66740734067396 is 69376043704766.

66740734067396 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 43266321465796 + 23474412601600 = 6577714^2 + 4845040^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8342591758421 + ... + 8342591758428.

It is an arithmetic number, because the mean of its divisors is an integer number (19466047436325).

Almost surely, 2^{66740734067396} is an apocalyptic number.

It is an amenable number.

66740734067396 is a deficient number, since it is larger than the sum of its proper divisors (50055550550554).

66740734067396 is a wasteful number, since it uses less digits than its factorization.

66740734067396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16685183516853 (or 16685183516851 counting only the distinct ones).

The product of its (nonzero) digits is 576108288, while the sum is 68.

The spelling of 66740734067396 in words is "sixty-six trillion, seven hundred forty billion, seven hundred thirty-four million, sixty-seven thousand, three hundred ninety-six".