64473240747556 has 12 divisors (see below), whose sum is σ = 112891239052060. Its totient is φ = 32218601018400.

The previous prime is 64473240747527. The next prime is 64473240747577. The reversal of 64473240747556 is 65574704237446.

64473240747556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 49401639676900 + 15071601070656 = 7028630^2 + 3882216^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4504830795 + ... + 4504845106.

Almost surely, 2^{64473240747556} is an apocalyptic number.

It is an amenable number.

64473240747556 is a deficient number, since it is larger than the sum of its proper divisors (48417998304504).

64473240747556 is a wasteful number, since it uses less digits than its factorization.

64473240747556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9009677694 (or 9009677692 counting only the distinct ones).

The product of its (nonzero) digits is 474163200, while the sum is 64.

The spelling of 64473240747556 in words is "sixty-four trillion, four hundred seventy-three billion, two hundred forty million, seven hundred forty-seven thousand, five hundred fifty-six".