66195049707 has 6 divisors (see below), whose sum is σ = 95615071812. Its totient is φ = 44130033132.

The previous prime is 66195049643. The next prime is 66195049741. The reversal of 66195049707 is 70794059166.

66195049707 is a `hidden beast` number, since 6 + 61 + 9 + 504 + 9 + 70 + 7 = 666.

It is not a de Polignac number, because 66195049707 - 2⁶ = 66195049643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66195049777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3677502753 + ... + 3677502770.

It is an arithmetic number, because the mean of its divisors is an integer number (15935845302).

Almost surely, 2^66195049707 is an apocalyptic number.

66195049707 is a deficient number, since it is larger than the sum of its proper divisors (29420022105).

66195049707 is a wasteful number, since it uses less digits than its factorization.

66195049707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7355005529 (or 7355005526 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 54.

The spelling of 66195049707 in words is "sixty-six billion, one hundred ninety-five million, forty-nine thousand, seven hundred seven".