39768232261 has 2 divisors, whose sum is σ = 39768232262. Its totient is φ = 39768232260.

The previous prime is 39768232241. The next prime is 39768232289. The reversal of 39768232261 is 16223286793.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33738709761 + 6029522500 = 183681^2 + 77650^2 .

It is a cyclic number.

It is not a de Polignac number, because 39768232261 - 2⁹ = 39768231749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39768232211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19884116130 + 19884116131.

It is an arithmetic number, because the mean of its divisors is an integer number (19884116131).

Almost surely, 2^39768232261 is an apocalyptic number.

It is an amenable number.

39768232261 is a deficient number, since it is larger than the sum of its proper divisors (1).

39768232261 is an equidigital number, since it uses as much as digits as its factorization.

39768232261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 49.

The spelling of 39768232261 in words is "thirty-nine billion, seven hundred sixty-eight million, two hundred thirty-two thousand, two hundred sixty-one".