4665465065421 has 20 divisors (see below), whose sum is σ = 6969902336892. Its totient is φ = 3110085160128.

The previous prime is 4665465065413. The next prime is 4665465065453. The reversal of 4665465065421 is 1245605645664.

4665465065421 is a `hidden beast` number, since 4 + 6 + 6 + 5 + 46 + 50 + 6 + 542 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2641076769321 + 2024388296100 = 1625139^2 + 1422810^2 .

It is not a de Polignac number, because 4665465065421 - 2³ = 4665465065413 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4665465065411) 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 19 ways as a sum of consecutive naturals, for example, 951280 + ... + 3199353.

Almost surely, 2^{4665465065421} is an apocalyptic number.

It is an amenable number.

4665465065421 is a deficient number, since it is larger than the sum of its proper divisors (2304437271471).

4665465065421 is a wasteful number, since it uses less digits than its factorization.

4665465065421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4164522 (or 4164513 counting only the distinct ones).

The product of its (nonzero) digits is 20736000, while the sum is 54.

The spelling of 4665465065421 in words is "four trillion, six hundred sixty-five billion, four hundred sixty-five million, sixty-five thousand, four hundred twenty-one".