64430448391 has 8 divisors (see below), whose sum is σ = 68131018368. Its totient is φ = 60831264000.

The previous prime is 64430448377. The next prime is 64430448431. The reversal of 64430448391 is 19384403446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64430448391 - 2¹¹ = 64430446343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64430448491) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 25345090 + ... + 25347631.

It is an arithmetic number, because the mean of its divisors is an integer number (8516377296).

Almost surely, 2^64430448391 is an apocalyptic number.

64430448391 is a deficient number, since it is larger than the sum of its proper divisors (3700569977).

64430448391 is a wasteful number, since it uses less digits than its factorization.

64430448391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50692793.

The product of its (nonzero) digits is 995328, while the sum is 46.

The spelling of 64430448391 in words is "sixty-four billion, four hundred thirty million, four hundred forty-eight thousand, three hundred ninety-one".