66455666655466 has 16 divisors (see below), whose sum is σ = 111397968940608. Its totient is φ = 29470362152800.

The previous prime is 66455666655431. The next prime is 66455666655467.

66455666655466 is nontrivially palindromic in base 10.

66455666655466 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×66455666655466³ (a number of 42 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66455666655392 and 66455666655401.

It is not an unprimeable number, because it can be changed into a prime (66455666655467) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 36837951790 + ... + 36837953593.

It is an arithmetic number, because the mean of its divisors is an integer number (6962373058788).

Almost surely, 2^{66455666655466} is an apocalyptic number.

66455666655466 is a deficient number, since it is larger than the sum of its proper divisors (44942302285142).

66455666655466 is a wasteful number, since it uses less digits than its factorization.

66455666655466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73675905437.

The product of its digits is 16796160000, while the sum is 76.

The spelling of 66455666655466 in words is "sixty-six trillion, four hundred fifty-five billion, six hundred sixty-six million, six hundred fifty-five thousand, four hundred sixty-six".