64244355064 has 16 divisors (see below), whose sum is σ = 120462766200. Its totient is φ = 32120950752.

The previous prime is 64244355059. The next prime is 64244355073. The reversal of 64244355064 is 46055344246.

It is a self number, because there is not a number n which added to its sum of digits gives 64244355064.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92379 + ... + 370165.

Almost surely, 2^64244355064 is an apocalyptic number.

It is an amenable number.

64244355064 is a deficient number, since it is larger than the sum of its proper divisors (56218411136).

64244355064 is a wasteful number, since it uses less digits than its factorization.

64244355064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306702 (or 306698 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 43.

The spelling of 64244355064 in words is "sixty-four billion, two hundred forty-four million, three hundred fifty-five thousand, sixty-four".