64278427344 has 40 divisors (see below), whose sum is σ = 166065829440. Its totient is φ = 21424435968.

The previous prime is 64278427327. The next prime is 64278427349. The reversal of 64278427344 is 44372487246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64278427349) 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, 651717 + ... + 743835.

It is an arithmetic number, because the mean of its divisors is an integer number (4151645736).

Almost surely, 2^64278427344 is an apocalyptic number.

It is an amenable number.

64278427344 is an abundant number, since it is smaller than the sum of its proper divisors (101787402096).

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

64278427344 is a wasteful number, since it uses less digits than its factorization.

64278427344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106667 (or 106661 counting only the distinct ones).

The product of its digits is 7225344, while the sum is 51.

The spelling of 64278427344 in words is "sixty-four billion, two hundred seventy-eight million, four hundred twenty-seven thousand, three hundred forty-four".