65320643075 has 12 divisors (see below), whose sum is σ = 81020658840. Its totient is φ = 52241636160.

The previous prime is 65320643071. The next prime is 65320643081. The reversal of 65320643075 is 57034602356.

It is not a de Polignac number, because 65320643075 - 2² = 65320643071 is a prime.

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

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 281969 + ... + 458418.

It is an arithmetic number, because the mean of its divisors is an integer number (6751721570).

Almost surely, 2^65320643075 is an apocalyptic number.

65320643075 is a deficient number, since it is larger than the sum of its proper divisors (15700015765).

65320643075 is a wasteful number, since it uses less digits than its factorization.

65320643075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743926 (or 743921 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 41.

The spelling of 65320643075 in words is "sixty-five billion, three hundred twenty million, six hundred forty-three thousand, seventy-five".