64122320324 has 12 divisors (see below), whose sum is σ = 112216227900. Its totient is φ = 32060540928.

The previous prime is 64122320267. The next prime is 64122320387. The reversal of 64122320324 is 42302322146.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 40288518400 + 23833801924 = 200720^2 + 154382^2 .

It is a super-2 number, since 2×64122320324² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140972 + ... + 384860.

It is an arithmetic number, because the mean of its divisors is an integer number (9351352325).

Almost surely, 2^64122320324 is an apocalyptic number.

It is an amenable number.

64122320324 is a deficient number, since it is larger than the sum of its proper divisors (48093907576).

64122320324 is a wasteful number, since it uses less digits than its factorization.

64122320324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309622 (or 309620 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

The spelling of 64122320324 in words is "sixty-four billion, one hundred twenty-two million, three hundred twenty thousand, three hundred twenty-four".