64843179648 has 256 divisors, whose sum is σ = 192522960000. Its totient is φ = 19199803392.

The previous prime is 64843179547. The next prime is 64843179719. The reversal of 64843179648 is 84697134846.

It is a junction number, because it is equal to n+sod(n) for n = 64843179591 and 64843179600.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60657258 + ... + 60658326.

Almost surely, 2^64843179648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64843179648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96261480000).

64843179648 is an abundant number, since it is smaller than the sum of its proper divisors (127679780352).

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

64843179648 is a wasteful number, since it uses less digits than its factorization.

64843179648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547 (or 1535 counting only the distinct ones).

The product of its digits is 27869184, while the sum is 60.

The spelling of 64843179648 in words is "sixty-four billion, eight hundred forty-three million, one hundred seventy-nine thousand, six hundred forty-eight".