65320643074 has 4 divisors (see below), whose sum is σ = 97980964614. Its totient is φ = 32660321536.

The previous prime is 65320643071. The next prime is 65320643081. The reversal of 65320643074 is 47034602356.

65320643074 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 49784765625 + 15535877449 = 223125^2 + 124643^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (65320643071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16330160767 + ... + 16330160770.

Almost surely, 2^65320643074 is an apocalyptic number.

65320643074 is a deficient number, since it is larger than the sum of its proper divisors (32660321540).

65320643074 is a wasteful number, since it uses less digits than its factorization.

65320643074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32660321539.

The product of its (nonzero) digits is 362880, while the sum is 40.

The spelling of 65320643074 in words is "sixty-five billion, three hundred twenty million, six hundred forty-three thousand, seventy-four".