20301453481 has 2 divisors, whose sum is σ = 20301453482. Its totient is φ = 20301453480.

The previous prime is 20301453463. The next prime is 20301453527. The reversal of 20301453481 is 18435410302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19364114025 + 937339456 = 139155^2 + 30616^2 .

It is a cyclic number.

It is not a de Polignac number, because 20301453481 - 2⁵ = 20301453449 is a prime.

It is a super-2 number, since 2×20301453481² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20301453181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10150726740 + 10150726741.

It is an arithmetic number, because the mean of its divisors is an integer number (10150726741).

Almost surely, 2^20301453481 is an apocalyptic number.

It is an amenable number.

20301453481 is a deficient number, since it is larger than the sum of its proper divisors (1).

20301453481 is an equidigital number, since it uses as much as digits as its factorization.

20301453481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 20301453481 its reverse (18435410302), we get a palindrome (38736863783).

The spelling of 20301453481 in words is "twenty billion, three hundred one million, four hundred fifty-three thousand, four hundred eighty-one".