64652232009 has 16 divisors (see below), whose sum is σ = 87420821760. Its totient is φ = 42496137600.

The previous prime is 64652231999. The next prime is 64652232013. The reversal of 64652232009 is 90023225646.

It is not a de Polignac number, because 64652232009 - 2⁷ = 64652231881 is a prime.

It is a super-2 number, since 2×64652232009² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64652230009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 373972 + ... + 518805.

It is an arithmetic number, because the mean of its divisors is an integer number (5463801360).

Almost surely, 2^64652232009 is an apocalyptic number.

It is an amenable number.

64652232009 is a deficient number, since it is larger than the sum of its proper divisors (22768589751).

64652232009 is a wasteful number, since it uses less digits than its factorization.

64652232009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893120.

The product of its (nonzero) digits is 155520, while the sum is 39.

The spelling of 64652232009 in words is "sixty-four billion, six hundred fifty-two million, two hundred thirty-two thousand, nine".