65182780073 has 2 divisors, whose sum is σ = 65182780074. Its totient is φ = 65182780072.

The previous prime is 65182780063. The next prime is 65182780129. The reversal of 65182780073 is 37008728156.

It is a happy number.

65182780073 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58518996649 + 6663783424 = 241907^2 + 81632^2 .

It is a cyclic number.

It is not a de Polignac number, because 65182780073 - 2⁴ = 65182780057 is a prime.

It is not a weakly prime, because it can be changed into another prime (65182780063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32591390036 + 32591390037.

It is an arithmetic number, because the mean of its divisors is an integer number (32591390037).

Almost surely, 2^65182780073 is an apocalyptic number.

It is an amenable number.

65182780073 is a deficient number, since it is larger than the sum of its proper divisors (1).

65182780073 is an equidigital number, since it uses as much as digits as its factorization.

65182780073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 65182780073 in words is "sixty-five billion, one hundred eighty-two million, seven hundred eighty thousand, seventy-three".