64257322960 has 40 divisors (see below), whose sum is σ = 152217121320. Its totient is φ = 25217966592.

The previous prime is 64257322937. The next prime is 64257322999. The reversal of 64257322960 is 6922375246.

It can be written as a sum of positive squares in 4 ways, for example, as 14290767936 + 49966555024 = 119544^2 + 223532^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 64257322960.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7573275 + ... + 7581754.

It is an arithmetic number, because the mean of its divisors is an integer number (3805428033).

Almost surely, 2^64257322960 is an apocalyptic number.

It is an amenable number.

64257322960 is an abundant number, since it is smaller than the sum of its proper divisors (87959798360).

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

64257322960 is a wasteful number, since it uses less digits than its factorization.

64257322960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15155095 (or 15155089 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 46.

The spelling of 64257322960 in words is "sixty-four billion, two hundred fifty-seven million, three hundred twenty-two thousand, nine hundred sixty".