64430448393 has 8 divisors (see below), whose sum is σ = 85986010656. Its totient is φ = 42914259200.

The previous prime is 64430448377. The next prime is 64430448431. The reversal of 64430448393 is 39384403446.

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 64430448393 - 2⁴ = 64430448377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64430448373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9839448 + ... + 9845993.

It is an arithmetic number, because the mean of its divisors is an integer number (10748251332).

Almost surely, 2^64430448393 is an apocalyptic number.

It is an amenable number.

64430448393 is a deficient number, since it is larger than the sum of its proper divisors (21555562263).

64430448393 is a wasteful number, since it uses less digits than its factorization.

64430448393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19686535.

The product of its (nonzero) digits is 2985984, while the sum is 48.

The spelling of 64430448393 in words is "sixty-four billion, four hundred thirty million, four hundred forty-eight thousand, three hundred ninety-three".