39968271061 has 2 divisors, whose sum is σ = 39968271062. Its totient is φ = 39968271060.

The previous prime is 39968271023. The next prime is 39968271127. The reversal of 39968271061 is 16017286993.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36530676900 + 3437594161 = 191130^2 + 58631^2 .

It is a cyclic number.

It is not a de Polignac number, because 39968271061 - 2¹¹ = 39968269013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39968271011) 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 as a sum of consecutive naturals, namely, 19984135530 + 19984135531.

It is an arithmetic number, because the mean of its divisors is an integer number (19984135531).

Almost surely, 2^39968271061 is an apocalyptic number.

It is an amenable number.

39968271061 is a deficient number, since it is larger than the sum of its proper divisors (1).

39968271061 is an equidigital number, since it uses as much as digits as its factorization.

39968271061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 979776, while the sum is 52.

The spelling of 39968271061 in words is "thirty-nine billion, nine hundred sixty-eight million, two hundred seventy-one thousand, sixty-one".