20300535553 has 2 divisors, whose sum is σ = 20300535554. Its totient is φ = 20300535552.

The previous prime is 20300535547. The next prime is 20300535571. The reversal of 20300535553 is 35553500302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15799735809 + 4500799744 = 125697^2 + 67088^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20300535553 is a prime.

It is a super-2 number, since 2×20300535553² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20300535653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10150267776 + 10150267777.

It is an arithmetic number, because the mean of its divisors is an integer number (10150267777).

Almost surely, 2^20300535553 is an apocalyptic number.

It is an amenable number.

20300535553 is a deficient number, since it is larger than the sum of its proper divisors (1).

20300535553 is an equidigital number, since it uses as much as digits as its factorization.

20300535553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33750, while the sum is 31.

The spelling of 20300535553 in words is "twenty billion, three hundred million, five hundred thirty-five thousand, five hundred fifty-three".