8445463707664 has 15 divisors (see below), whose sum is σ = 16363108455967. Its totient is φ = 4222726041616.

The previous prime is 8445463707649. The next prime is 8445463707721. The reversal of 8445463707664 is 4667073645448.

It is a happy number.

The square root of 8445463707664 is 2906108.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8445463707596 and 8445463707605.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 11261169 + ... + 11987695.

Almost surely, 2^{8445463707664} is an apocalyptic number.

8445463707664 is the 2906108-th square number.

It is an amenable number.

8445463707664 is a deficient number, since it is larger than the sum of its proper divisors (7917644748303).

8445463707664 is an frugal number, since it uses more digits than its factorization.

8445463707664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1453062 (or 726529 counting only the distinct ones).

The product of its (nonzero) digits is 325140480, while the sum is 64.

Multiplying 8445463707664 by its sum of digits (64), we get a square (540509677290496 = 23248864²).

The spelling of 8445463707664 in words is "eight trillion, four hundred forty-five billion, four hundred sixty-three million, seven hundred seven thousand, six hundred sixty-four".