39461768712661 has 2 divisors, whose sum is σ = 39461768712662. Its totient is φ = 39461768712660.

The previous prime is 39461768712637. The next prime is 39461768712719. The reversal of 39461768712661 is 16621786716493.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38948208722500 + 513559990161 = 6240850^2 + 716631^2 .

It is a cyclic number.

It is not a de Polignac number, because 39461768712661 - 2⁵ = 39461768712629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39461768712161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19730884356330 + 19730884356331.

It is an arithmetic number, because the mean of its divisors is an integer number (19730884356331).

Almost surely, 2^{39461768712661} is an apocalyptic number.

It is an amenable number.

39461768712661 is a deficient number, since it is larger than the sum of its proper divisors (1).

39461768712661 is an equidigital number, since it uses as much as digits as its factorization.

39461768712661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 109734912, while the sum is 67.

The spelling of 39461768712661 in words is "thirty-nine trillion, four hundred sixty-one billion, seven hundred sixty-eight million, seven hundred twelve thousand, six hundred sixty-one".