64259646852 has 12 divisors (see below), whose sum is σ = 149939176016. Its totient is φ = 21419882280.

The previous prime is 64259646821. The next prime is 64259646853. The reversal of 64259646852 is 25864695246.

64259646852 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 64259646792 and 64259646801.

It is not an unprimeable number, because it can be changed into a prime (64259646853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2677485274 + ... + 2677485297.

Almost surely, 2^64259646852 is an apocalyptic number.

It is an amenable number.

64259646852 is an abundant number, since it is smaller than the sum of its proper divisors (85679529164).

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

64259646852 is a wasteful number, since it uses less digits than its factorization.

64259646852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5354970578 (or 5354970576 counting only the distinct ones).

The product of its digits is 24883200, while the sum is 57.

The spelling of 64259646852 in words is "sixty-four billion, two hundred fifty-nine million, six hundred forty-six thousand, eight hundred fifty-two".