64356917248 has 56 divisors (see below), whose sum is σ = 138606667668. Its totient is φ = 29703143424.

The previous prime is 64356917243. The next prime is 64356917263. The reversal of 64356917248 is 84271965346.

It can be written as a sum of positive squares in 2 ways, for example, as 64134549504 + 222367744 = 253248^2 + 14912^2 .

It is not an unprimeable number, because it can be changed into a prime (64356917243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195661 + ... + 408652.

Almost surely, 2^64356917248 is an apocalyptic number.

It is an amenable number.

64356917248 is an abundant number, since it is smaller than the sum of its proper divisors (74249750420).

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

64356917248 is an equidigital number, since it uses as much as digits as its factorization.

64356917248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604352 (or 604328 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 55.

The spelling of 64356917248 in words is "sixty-four billion, three hundred fifty-six million, nine hundred seventeen thousand, two hundred forty-eight".