20113430453 has 2 divisors, whose sum is σ = 20113430454. Its totient is φ = 20113430452.

The previous prime is 20113430437. The next prime is 20113430479. The reversal of 20113430453 is 35403431102.

It is an a-pointer prime, because the next prime (20113430479) can be obtained adding 20113430453 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13247319409 + 6866111044 = 115097^2 + 82862^2 .

It is a cyclic number.

It is not a de Polignac number, because 20113430453 - 2⁴ = 20113430437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20113430413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056715226 + 10056715227.

It is an arithmetic number, because the mean of its divisors is an integer number (10056715227).

Almost surely, 2^20113430453 is an apocalyptic number.

It is an amenable number.

20113430453 is a deficient number, since it is larger than the sum of its proper divisors (1).

20113430453 is an equidigital number, since it uses as much as digits as its factorization.

20113430453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 20113430453 its reverse (35403431102), we get a palindrome (55516861555).

The spelling of 20113430453 in words is "twenty billion, one hundred thirteen million, four hundred thirty thousand, four hundred fifty-three".