65785387741 has 2 divisors, whose sum is σ = 65785387742. Its totient is φ = 65785387740.

The previous prime is 65785387729. The next prime is 65785387757. The reversal of 65785387741 is 14778358756.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55736127225 + 10049260516 = 236085^2 + 100246^2 .

It is a cyclic number.

It is not a de Polignac number, because 65785387741 - 2⁹ = 65785387229 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65785387741.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65785387721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32892693870 + 32892693871.

It is an arithmetic number, because the mean of its divisors is an integer number (32892693871).

Almost surely, 2^65785387741 is an apocalyptic number.

It is an amenable number.

65785387741 is a deficient number, since it is larger than the sum of its proper divisors (1).

65785387741 is an equidigital number, since it uses as much as digits as its factorization.

65785387741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 39513600, while the sum is 61.

The spelling of 65785387741 in words is "sixty-five billion, seven hundred eighty-five million, three hundred eighty-seven thousand, seven hundred forty-one".