64238404389 has 8 divisors (see below), whose sum is σ = 86857561152. Its totient is φ = 42222425280.

The previous prime is 64238404343. The next prime is 64238404409. The reversal of 64238404389 is 98340483246.

64238404389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 64238404389 - 2⁹ = 64238403877 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64238414389) 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, 150794164 + ... + 150794589.

It is an arithmetic number, because the mean of its divisors is an integer number (10857195144).

Almost surely, 2^64238404389 is an apocalyptic number.

It is an amenable number.

64238404389 is a deficient number, since it is larger than the sum of its proper divisors (22619156763).

64238404389 is a wasteful number, since it uses less digits than its factorization.

64238404389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301588827.

The product of its (nonzero) digits is 3981312, while the sum is 51.

The spelling of 64238404389 in words is "sixty-four billion, two hundred thirty-eight million, four hundred four thousand, three hundred eighty-nine".