65391383305 has 16 divisors (see below), whose sum is σ = 80090914320. Its totient is φ = 51235744768.

The previous prime is 65391383273. The next prime is 65391383333. The reversal of 65391383305 is 50338319356.

It can be written as a sum of positive squares in 8 ways, for example, as 1306967104 + 64084416201 = 36152^2 + 253149^2 .

It is a cyclic number.

It is not a de Polignac number, because 65391383305 - 2⁵ = 65391383273 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66052 + ... + 367621.

It is an arithmetic number, because the mean of its divisors is an integer number (5005682145).

Almost surely, 2^65391383305 is an apocalyptic number.

It is an amenable number.

65391383305 is a deficient number, since it is larger than the sum of its proper divisors (14699531015).

65391383305 is a wasteful number, since it uses less digits than its factorization.

65391383305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434300.

The product of its (nonzero) digits is 874800, while the sum is 46.

The spelling of 65391383305 in words is "sixty-five billion, three hundred ninety-one million, three hundred eighty-three thousand, three hundred five".