64430448392 has 36 divisors (see below), whose sum is σ = 128355722205. Its totient is φ = 30314467456.

The previous prime is 64430448377. The next prime is 64430448431. The reversal of 64430448392 is 29384403446.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 58968351556 + 5462096836 = 242834^2 + 73906^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=179486.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 12202409 + ... + 12207687.

Almost surely, 2^64430448392 is an apocalyptic number.

It is an amenable number.

64430448392 is a deficient number, since it is larger than the sum of its proper divisors (63925273813).

64430448392 is an frugal number, since it uses more digits than its factorization.

64430448392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10598 (or 5298 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 47.

The spelling of 64430448392 in words is "sixty-four billion, four hundred thirty million, four hundred forty-eight thousand, three hundred ninety-two".