64588431680 has 42 divisors (see below), whose sum is σ = 153812029434. Its totient is φ = 25833554176.

The previous prime is 64588431673. The next prime is 64588431683. The reversal of 64588431680 is 8613488546.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 51670745344 + 12917686336 = 227312^2 + 113656^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64588431683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4539137 + ... + 4553343.

It is an arithmetic number, because the mean of its divisors is an integer number (3662191177).

Almost surely, 2^64588431680 is an apocalyptic number.

It is an amenable number.

64588431680 is an abundant number, since it is smaller than the sum of its proper divisors (89223597754).

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

64588431680 is an frugal number, since it uses more digits than its factorization.

64588431680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28431 (or 14214 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 53.

The spelling of 64588431680 in words is "sixty-four billion, five hundred eighty-eight million, four hundred thirty-one thousand, six hundred eighty".