64324619008 has 72 divisors (see below), whose sum is σ = 139499222688. Its totient is φ = 29425385472.

The previous prime is 64324619003. The next prime is 64324619017. The reversal of 64324619008 is 80091642346.

It is a happy number.

It is a super-2 number, since 2×64324619008² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64324619003) 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 7 ways as a sum of consecutive naturals, for example, 290541 + ... + 461587.

It is an arithmetic number, because the mean of its divisors is an integer number (1937489204).

Almost surely, 2^64324619008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64324619008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69749611344).

64324619008 is an abundant number, since it is smaller than the sum of its proper divisors (75174603680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64324619008 is a wasteful number, since it uses less digits than its factorization.

64324619008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171189 (or 171175 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 43.

The spelling of 64324619008 in words is "sixty-four billion, three hundred twenty-four million, six hundred nineteen thousand, eight".