65785633073 has 2 divisors, whose sum is σ = 65785633074. Its totient is φ = 65785633072.

The previous prime is 65785633033. The next prime is 65785633211. The reversal of 65785633073 is 37033658756.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64631875984 + 1153757089 = 254228^2 + 33967^2 .

It is a cyclic number.

It is not a de Polignac number, because 65785633073 - 2²² = 65781438769 is a prime.

It is not a weakly prime, because it can be changed into another prime (65785633033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32892816536 + 32892816537.

It is an arithmetic number, because the mean of its divisors is an integer number (32892816537).

Almost surely, 2^65785633073 is an apocalyptic number.

It is an amenable number.

65785633073 is a deficient number, since it is larger than the sum of its proper divisors (1).

65785633073 is an equidigital number, since it uses as much as digits as its factorization.

65785633073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9525600, while the sum is 53.

The spelling of 65785633073 in words is "sixty-five billion, seven hundred eighty-five million, six hundred thirty-three thousand, seventy-three".