20466061454465 has 16 divisors (see below), whose sum is σ = 26886606163776. Its totient is φ = 14831813236800.

The previous prime is 20466061454417. The next prime is 20466061454467. The reversal of 20466061454465 is 56445416066402.

It is a happy number.

It is not a de Polignac number, because 20466061454465 - 2²² = 20466057260161 is a prime.

It is a super-3 number, since 3×20466061454465³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20466061454467) by changing a digit.

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, 657422966 + ... + 657454095.

It is an arithmetic number, because the mean of its divisors is an integer number (1680412885236).

Almost surely, 2^{20466061454465} is an apocalyptic number.

It is an amenable number.

20466061454465 is a deficient number, since it is larger than the sum of its proper divisors (6420544709311).

20466061454465 is a wasteful number, since it uses less digits than its factorization.

20466061454465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1314877360.

The product of its (nonzero) digits is 16588800, while the sum is 53.

The spelling of 20466061454465 in words is "twenty trillion, four hundred sixty-six billion, sixty-one million, four hundred fifty-four thousand, four hundred sixty-five".