65520067201 has 4 divisors (see below), whose sum is σ = 66914111232. Its totient is φ = 64126023172.

The previous prime is 65520067189. The next prime is 65520067297. The reversal of 65520067201 is 10276002556.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65520067201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65520067601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 697021945 + ... + 697022038.

It is an arithmetic number, because the mean of its divisors is an integer number (16728527808).

Almost surely, 2^65520067201 is an apocalyptic number.

It is an amenable number.

65520067201 is a deficient number, since it is larger than the sum of its proper divisors (1394044031).

65520067201 is a wasteful number, since it uses less digits than its factorization.

65520067201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1394044030.

The product of its (nonzero) digits is 25200, while the sum is 34.

Adding to 65520067201 its reverse (10276002556), we get a palindrome (75796069757).

The spelling of 65520067201 in words is "sixty-five billion, five hundred twenty million, sixty-seven thousand, two hundred one".