39664646701 has 2 divisors, whose sum is σ = 39664646702. Its totient is φ = 39664646700.

The previous prime is 39664646689. The next prime is 39664646713. The reversal of 39664646701 is 10764646693.

39664646701 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (39664646689) and next prime (39664646713).

It can be written as a sum of positive squares in only one way, i.e., 27979252900 + 11685393801 = 167270^2 + 108099^2 .

It is a cyclic number.

It is not a de Polignac number, because 39664646701 - 2¹¹ = 39664644653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39664646741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19832323350 + 19832323351.

It is an arithmetic number, because the mean of its divisors is an integer number (19832323351).

Almost surely, 2^39664646701 is an apocalyptic number.

It is an amenable number.

39664646701 is a deficient number, since it is larger than the sum of its proper divisors (1).

39664646701 is an equidigital number, since it uses as much as digits as its factorization.

39664646701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3919104, while the sum is 52.

The spelling of 39664646701 in words is "thirty-nine billion, six hundred sixty-four million, six hundred forty-six thousand, seven hundred one".