20683107453 has 4 divisors (see below), whose sum is σ = 27577476608. Its totient is φ = 13788738300.

The previous prime is 20683107451. The next prime is 20683107463. The reversal of 20683107453 is 35470138602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20683107453 - 2¹ = 20683107451 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20683107451) 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 3 ways as a sum of consecutive naturals, for example, 3447184573 + ... + 3447184578.

It is an arithmetic number, because the mean of its divisors is an integer number (6894369152).

Almost surely, 2^20683107453 is an apocalyptic number.

It is an amenable number.

20683107453 is a deficient number, since it is larger than the sum of its proper divisors (6894369155).

20683107453 is an equidigital number, since it uses as much as digits as its factorization.

20683107453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6894369154.

The product of its (nonzero) digits is 120960, while the sum is 39.

The spelling of 20683107453 in words is "twenty billion, six hundred eighty-three million, one hundred seven thousand, four hundred fifty-three".