20427746865453 has 8 divisors (see below), whose sum is σ = 30263328689600. Its totient is φ = 13618497910284.

The previous prime is 20427746865443. The next prime is 20427746865479. The reversal of 20427746865453 is 35456864772402.

20427746865453 is a `hidden beast` number, since 2 + 0 + 4 + 2 + 7 + 7 + 4 + 6 + 86 + 545 + 3 = 666.

It is not a de Polignac number, because 20427746865453 - 2⁴ = 20427746865437 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 (20427746865403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 378291608593 + ... + 378291608646.

It is an arithmetic number, because the mean of its divisors is an integer number (3782916086200).

Almost surely, 2^{20427746865453} is an apocalyptic number.

It is an amenable number.

20427746865453 is a deficient number, since it is larger than the sum of its proper divisors (9835581824147).

20427746865453 is an equidigital number, since it uses as much as digits as its factorization.

20427746865453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756583217248 (or 756583217242 counting only the distinct ones).

The product of its (nonzero) digits is 270950400, while the sum is 63.

The spelling of 20427746865453 in words is "twenty trillion, four hundred twenty-seven billion, seven hundred forty-six million, eight hundred sixty-five thousand, four hundred fifty-three".