664553355466 has 256 divisors, whose sum is σ = 1402574745600. Its totient is φ = 227867904000.

The previous prime is 664553355457. The next prime is 664553355481.

664553355466 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×664553355466² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 664553355466.

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 127 ways as a sum of consecutive naturals, for example, 819424201 + ... + 819425011.

It is an arithmetic number, because the mean of its divisors is an integer number (5478807600).

Almost surely, 2^664553355466 is an apocalyptic number.

664553355466 is an abundant number, since it is smaller than the sum of its proper divisors (738021390134).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

664553355466 is a wasteful number, since it uses less digits than its factorization.

664553355466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1101.

The product of its digits is 116640000, while the sum is 58.

The spelling of 664553355466 in words is "six hundred sixty-four billion, five hundred fifty-three million, three hundred fifty-five thousand, four hundred sixty-six".