64099302217 has 4 divisors (see below), whose sum is σ = 64135869460. Its totient is φ = 64062734976.

The previous prime is 64099302203. The next prime is 64099302259. The reversal of 64099302217 is 71220399046.

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

It can be written as a sum of positive squares in 2 ways, for example, as 27054986256 + 37044315961 = 164484^2 + 192469^2 .

It is a cyclic number.

It is not a de Polignac number, because 64099302217 - 2⁷ = 64099302089 is a prime.

It is a super-2 number, since 2×64099302217² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64099302017) 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, 18280992 + ... + 18284497.

It is an arithmetic number, because the mean of its divisors is an integer number (16033967365).

Almost surely, 2^64099302217 is an apocalyptic number.

It is an amenable number.

64099302217 is a deficient number, since it is larger than the sum of its proper divisors (36567243).

64099302217 is a wasteful number, since it uses less digits than its factorization.

64099302217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36567242.

The product of its (nonzero) digits is 163296, while the sum is 43.

The spelling of 64099302217 in words is "sixty-four billion, ninety-nine million, three hundred two thousand, two hundred seventeen".