64252494340 has 12 divisors (see below), whose sum is σ = 134930238156. Its totient is φ = 25700997728.

The previous prime is 64252494331. The next prime is 64252494343. The reversal of 64252494340 is 4349425246.

It can be written as a sum of positive squares in 2 ways, for example, as 37922888644 + 26329605696 = 194738^2 + 162264^2 .

It is not an unprimeable number, because it can be changed into a prime (64252494343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1606312339 + ... + 1606312378.

It is an arithmetic number, because the mean of its divisors is an integer number (11244186513).

Almost surely, 2^64252494340 is an apocalyptic number.

It is an amenable number.

64252494340 is an abundant number, since it is smaller than the sum of its proper divisors (70677743816).

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

64252494340 is a wasteful number, since it uses less digits than its factorization.

64252494340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3212624726 (or 3212624724 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 43.

The spelling of 64252494340 in words is "sixty-four billion, two hundred fifty-two million, four hundred ninety-four thousand, three hundred forty".