64859376344 has 32 divisors (see below), whose sum is σ = 147159931680. Its totient is φ = 26161764864.

The previous prime is 64859376289. The next prime is 64859376347. The reversal of 64859376344 is 44367395846.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64859376347) 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, 34063847 + ... + 34065750.

It is an arithmetic number, because the mean of its divisors is an integer number (4598747865).

Almost surely, 2^64859376344 is an apocalyptic number.

It is an amenable number.

64859376344 is an abundant number, since it is smaller than the sum of its proper divisors (82300555336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64859376344 is a wasteful number, since it uses less digits than its factorization.

64859376344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68129627 (or 68129623 counting only the distinct ones).

The product of its digits is 52254720, while the sum is 59.

The spelling of 64859376344 in words is "sixty-four billion, eight hundred fifty-nine million, three hundred seventy-six thousand, three hundred forty-four".