65446664456 has 8 divisors (see below), whose sum is σ = 122712495870. Its totient is φ = 32723332224.

The previous prime is 65446664449. The next prime is 65446664471.

65446664456 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 59503796356 + 5942868100 = 243934^2 + 77090^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 4090416521 + ... + 4090416536.

Almost surely, 2^65446664456 is an apocalyptic number.

It is an amenable number.

65446664456 is a deficient number, since it is larger than the sum of its proper divisors (57265831414).

65446664456 is a wasteful number, since it uses less digits than its factorization.

65446664456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8180833063 (or 8180833059 counting only the distinct ones).

The product of its digits is 49766400, while the sum is 56.

The spelling of 65446664456 in words is "sixty-five billion, four hundred forty-six million, six hundred sixty-four thousand, four hundred fifty-six".