32220465665 has 16 divisors (see below), whose sum is σ = 39947875968. Its totient is φ = 24932468736.

The previous prime is 32220465661. The next prime is 32220465701. The reversal of 32220465665 is 56656402223.

It is a cyclic number.

It is not a de Polignac number, because 32220465665 - 2² = 32220465661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (32220465661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 705344 + ... + 749633.

It is an arithmetic number, because the mean of its divisors is an integer number (2496742248).

Almost surely, 2^32220465665 is an apocalyptic number.

It is an amenable number.

32220465665 is a deficient number, since it is larger than the sum of its proper divisors (7727410303).

32220465665 is a wasteful number, since it uses less digits than its factorization.

32220465665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455128.

The product of its (nonzero) digits is 518400, while the sum is 41.

Adding to 32220465665 its reverse (56656402223), we get a palindrome (88876867888).

The spelling of 32220465665 in words is "thirty-two billion, two hundred twenty million, four hundred sixty-five thousand, six hundred sixty-five".