2064665060221 has 8 divisors (see below), whose sum is σ = 2068280158464. Its totient is φ = 2061052649040.

The previous prime is 2064665060209. The next prime is 2064665060243. The reversal of 2064665060221 is 1220605664602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2064665060221 - 2³⁵ = 2030305321853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2064665060281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 869415 + ... + 2210251.

It is an arithmetic number, because the mean of its divisors is an integer number (258535019808).

Almost surely, 2^{2064665060221} is an apocalyptic number.

It is an amenable number.

2064665060221 is a deficient number, since it is larger than the sum of its proper divisors (3615098243).

2064665060221 is a wasteful number, since it uses less digits than its factorization.

2064665060221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343531.

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 2064665060221 in words is "two trillion, sixty-four billion, six hundred sixty-five million, sixty thousand, two hundred twenty-one".