64444052120 has 64 divisors (see below), whose sum is σ = 165843763200. Its totient is φ = 22077705600.

The previous prime is 64444052111. The next prime is 64444052159. The reversal of 64444052120 is 2125044446.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268145 + ... + 448095.

It is an arithmetic number, because the mean of its divisors is an integer number (2591308800).

Almost surely, 2^64444052120 is an apocalyptic number.

It is an amenable number.

64444052120 is an abundant number, since it is smaller than the sum of its proper divisors (101399711080).

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

64444052120 is a wasteful number, since it uses less digits than its factorization.

64444052120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181248 (or 181244 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 32.

Adding to 64444052120 its reverse (2125044446), we get a palindrome (66569096566).

The spelling of 64444052120 in words is "sixty-four billion, four hundred forty-four million, fifty-two thousand, one hundred twenty".