20242443065461 has 4 divisors (see below), whose sum is σ = 20242575666412. Its totient is φ = 20242310464512.

The previous prime is 20242443065437. The next prime is 20242443065521. The reversal of 20242443065461 is 16456034424202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3077322892900 + 17165120172561 = 1754230^2 + 4143081^2 .

It is a cyclic number.

It is not a de Polignac number, because 20242443065461 - 2¹¹ = 20242443063413 is a prime.

It is a super-2 number, since 2×20242443065461² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20242443063461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66071226 + ... + 66376891.

It is an arithmetic number, because the mean of its divisors is an integer number (5060643916603).

Almost surely, 2^{20242443065461} is an apocalyptic number.

It is an amenable number.

20242443065461 is a deficient number, since it is larger than the sum of its proper divisors (132600951).

20242443065461 is a wasteful number, since it uses less digits than its factorization.

20242443065461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132600950.

The product of its (nonzero) digits is 1105920, while the sum is 43.

Adding to 20242443065461 its reverse (16456034424202), we get a palindrome (36698477489663).

The spelling of 20242443065461 in words is "twenty trillion, two hundred forty-two billion, four hundred forty-three million, sixty-five thousand, four hundred sixty-one".