64443234532 has 6 divisors (see below), whose sum is σ = 112775660438. Its totient is φ = 32221617264.

The previous prime is 64443234523. The next prime is 64443234547. The reversal of 64443234532 is 23543234446.

It can be written as a sum of positive squares in only one way, i.e., 59060664576 + 5382569956 = 243024^2 + 73366^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 8055404313 + ... + 8055404320.

Almost surely, 2^64443234532 is an apocalyptic number.

It is an amenable number.

64443234532 is a deficient number, since it is larger than the sum of its proper divisors (48332425906).

64443234532 is a wasteful number, since it uses less digits than its factorization.

64443234532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16110808637 (or 16110808635 counting only the distinct ones).

The product of its digits is 829440, while the sum is 40.

Adding to 64443234532 its reverse (23543234446), we get a palindrome (87986468978).

The spelling of 64443234532 in words is "sixty-four billion, four hundred forty-three million, two hundred thirty-four thousand, five hundred thirty-two".