66740040006706 has 16 divisors (see below), whose sum is σ = 109211125065120. Its totient is φ = 30336340013280.

The previous prime is 66740040006691. The next prime is 66740040006713. The reversal of 66740040006706 is 60760004004766.

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, 18935605 + ... + 22181911.

It is an arithmetic number, because the mean of its divisors is an integer number (6825695316570).

Almost surely, 2^{66740040006706} is an apocalyptic number.

66740040006706 is a deficient number, since it is larger than the sum of its proper divisors (42471085058414).

66740040006706 is a wasteful number, since it uses less digits than its factorization.

66740040006706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4180809.

The product of its (nonzero) digits is 1016064, while the sum is 46.

The spelling of 66740040006706 in words is "sixty-six trillion, seven hundred forty billion, forty million, six thousand, seven hundred six".