64863487738 has 32 divisors (see below), whose sum is σ = 112146246144. Its totient is φ = 27561485952.

The previous prime is 64863487727. The next prime is 64863487747. The reversal of 64863487738 is 83778436846.

It is a self number, because there is not a number n which added to its sum of digits gives 64863487738.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 985806 + ... + 1049542.

It is an arithmetic number, because the mean of its divisors is an integer number (3504570192).

Almost surely, 2^64863487738 is an apocalyptic number.

64863487738 is a deficient number, since it is larger than the sum of its proper divisors (47282758406).

64863487738 is a wasteful number, since it uses less digits than its factorization.

64863487738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64366.

The product of its digits is 130056192, while the sum is 64.

The spelling of 64863487738 in words is "sixty-four billion, eight hundred sixty-three million, four hundred eighty-seven thousand, seven hundred thirty-eight".