39768951077 has 2 divisors, whose sum is σ = 39768951078. Its totient is φ = 39768951076.

The previous prime is 39768951043. The next prime is 39768951133. The reversal of 39768951077 is 77015986793.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39238063396 + 530887681 = 198086^2 + 23041^2 .

It is an emirp because it is prime and its reverse (77015986793) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39768951077 - 2⁸ = 39768950821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39768951877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19884475538 + 19884475539.

It is an arithmetic number, because the mean of its divisors is an integer number (19884475539).

Almost surely, 2^39768951077 is an apocalyptic number.

It is an amenable number.

39768951077 is a deficient number, since it is larger than the sum of its proper divisors (1).

39768951077 is an equidigital number, since it uses as much as digits as its factorization.

39768951077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20003760, while the sum is 62.

The spelling of 39768951077 in words is "thirty-nine billion, seven hundred sixty-eight million, nine hundred fifty-one thousand, seventy-seven".