56446064465 has 16 divisors (see below), whose sum is σ = 79058806272. Its totient is φ = 37882342464.

The previous prime is 56446064387. The next prime is 56446064471.

56446064465 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 56446064465 - 2¹² = 56446060369 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17155214 + ... + 17158503.

It is an arithmetic number, because the mean of its divisors is an integer number (4941175392).

Almost surely, 2^56446064465 is an apocalyptic number.

It is an amenable number.

56446064465 is a deficient number, since it is larger than the sum of its proper divisors (22612741807).

56446064465 is a wasteful number, since it uses less digits than its factorization.

56446064465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34313776.

The product of its (nonzero) digits is 8294400, while the sum is 50.

The spelling of 56446064465 in words is "fifty-six billion, four hundred forty-six million, sixty-four thousand, four hundred sixty-five".