64345357439 has 8 divisors (see below), whose sum is σ = 70291498368. Its totient is φ = 58415310360.

The previous prime is 64345357429. The next prime is 64345357463. The reversal of 64345357439 is 93475354346.

It is a happy number.

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

It is not a de Polignac number, because 64345357439 - 2⁸ = 64345357183 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 (64345357429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4015097 + ... + 4031090.

It is an arithmetic number, because the mean of its divisors is an integer number (8786437296).

Almost surely, 2^64345357439 is an apocalyptic number.

64345357439 is a deficient number, since it is larger than the sum of its proper divisors (5946140929).

64345357439 is a wasteful number, since it uses less digits than its factorization.

64345357439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8046925.

The product of its digits is 16329600, while the sum is 53.

The spelling of 64345357439 in words is "sixty-four billion, three hundred forty-five million, three hundred fifty-seven thousand, four hundred thirty-nine".