66454466445466 has 16 divisors (see below), whose sum is σ = 115140358975680. Its totient is φ = 28429718265280.

The previous prime is 66454466445463. The next prime is 66454466445469.

It is a happy number.

66454466445466 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (66454466445463) and next prime (66454466445469).

It is a super-2 number, since 2×66454466445466² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66454466445395 and 66454466445404.

It is not an unprimeable number, because it can be changed into a prime (66454466445463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88842869206 + ... + 88842869953.

It is an arithmetic number, because the mean of its divisors is an integer number (7196272435980).

Almost surely, 2^{66454466445466} is an apocalyptic number.

66454466445466 is a deficient number, since it is larger than the sum of its proper divisors (48685892530214).

66454466445466 is a wasteful number, since it uses less digits than its factorization.

66454466445466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177685739189.

The product of its digits is 4777574400, while the sum is 70.

The spelling of 66454466445466 in words is "sixty-six trillion, four hundred fifty-four billion, four hundred sixty-six million, four hundred forty-five thousand, four hundred sixty-six".