66445411454466 has 64 divisors (see below), whose sum is σ = 145217729664000. Its totient is φ = 20100845505600.

The previous prime is 66445411454419. The next prime is 66445411454501.

66445411454466 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93920605 + ... + 94625423.

It is an arithmetic number, because the mean of its divisors is an integer number (2269027026000).

Almost surely, 2^{66445411454466} is an apocalyptic number.

66445411454466 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

66445411454466 is an abundant number, since it is smaller than the sum of its proper divisors (78772318209534).

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

66445411454466 is a wasteful number, since it uses less digits than its factorization.

66445411454466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707255.

The product of its digits is 132710400, while the sum is 60.

The spelling of 66445411454466 in words is "sixty-six trillion, four hundred forty-five billion, four hundred eleven million, four hundred fifty-four thousand, four hundred sixty-six".