20411021566453 has 8 divisors (see below), whose sum is σ = 23327313475520. Its totient is φ = 17494837578720.

The previous prime is 20411021566427. The next prime is 20411021566471. The reversal of 20411021566453 is 35466512011402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20411021566453 - 2²¹ = 20411019469301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20411021566553) 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, 26574648 + ... + 27331921.

It is an arithmetic number, because the mean of its divisors is an integer number (2915914184440).

Almost surely, 2^{20411021566453} is an apocalyptic number.

It is an amenable number.

20411021566453 is a deficient number, since it is larger than the sum of its proper divisors (2916291909067).

20411021566453 is an equidigital number, since it uses as much as digits as its factorization.

20411021566453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53960667.

The product of its (nonzero) digits is 172800, while the sum is 40.

Adding to 20411021566453 its reverse (35466512011402), we get a palindrome (55877533577855).

The spelling of 20411021566453 in words is "twenty trillion, four hundred eleven billion, twenty-one million, five hundred sixty-six thousand, four hundred fifty-three".