65220210667 has 4 divisors (see below), whose sum is σ = 65224626016. Its totient is φ = 65215795320.

The previous prime is 65220210647. The next prime is 65220210683. The reversal of 65220210667 is 76601202256.

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

It is a cyclic number.

It is not a de Polignac number, because 65220210667 - 2¹⁵ = 65220177899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65220210637) 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, 2185443 + ... + 2215084.

It is an arithmetic number, because the mean of its divisors is an integer number (16306156504).

Almost surely, 2^65220210667 is an apocalyptic number.

65220210667 is a deficient number, since it is larger than the sum of its proper divisors (4415349).

65220210667 is a wasteful number, since it uses less digits than its factorization.

65220210667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4415348.

The product of its (nonzero) digits is 60480, while the sum is 37.

The spelling of 65220210667 in words is "sixty-five billion, two hundred twenty million, two hundred ten thousand, six hundred sixty-seven".